diff --git a/parachains/common/src/xcm_config.rs b/parachains/common/src/xcm_config.rs
index 346e0f9cb61..b9ae5ef87ce 100644
--- a/parachains/common/src/xcm_config.rs
+++ b/parachains/common/src/xcm_config.rs
@@ -119,17 +119,3 @@ impl<Location: Get<MultiLocation>> FilterAssetLocation for ConcreteNativeAssetFr
 		matches!(asset.id, Concrete(ref id) if id == origin && origin == &Location::get())
 	}
 }
-
-/// A generic function to use for MultiAssetFilter implementations, currently used to differentiate
-/// between reserve operations and the rest of them.
-pub fn weigh_multi_assets_generic(
-	filter: &MultiAssetFilter,
-	weight: Weight,
-	max_assets: u32,
-) -> XCMWeight {
-	let multiplier = match filter {
-		MultiAssetFilter::Definite(assets) => assets.len() as u64,
-		MultiAssetFilter::Wild(_) => max_assets as u64,
-	};
-	weight.saturating_mul(multiplier).ref_time()
-}
diff --git a/parachains/runtimes/assets/statemine/src/weights/xcm/mod.rs b/parachains/runtimes/assets/statemine/src/weights/xcm/mod.rs
index 9dd4345ef73..79fbd0812bb 100644
--- a/parachains/runtimes/assets/statemine/src/weights/xcm/mod.rs
+++ b/parachains/runtimes/assets/statemine/src/weights/xcm/mod.rs
@@ -21,7 +21,7 @@ use crate::Runtime;
 use frame_support::weights::Weight;
 use pallet_xcm_benchmarks_fungible::WeightInfo as XcmFungibleWeight;
 use pallet_xcm_benchmarks_generic::WeightInfo as XcmGeneric;
-use parachains_common::xcm_config::weigh_multi_assets_generic;
+use sp_std::prelude::*;
 use xcm::{
 	latest::{prelude::*, Weight as XCMWeight},
 	DoubleEncoded,
@@ -31,29 +31,22 @@ trait WeighMultiAssets {
 	fn weigh_multi_assets(&self, weight: Weight) -> XCMWeight;
 }
 
-trait WeighMultiAssetsReserve {
-	fn weigh_multi_assets_reserve(&self, weight: Weight) -> XCMWeight;
-}
-
-const RESERVE_MAX_ASSETS: u32 = 100;
-/// For teleports and deposits
-const MAX_ASSETS: u32 = 1;
+const MAX_ASSETS: u32 = 100;
 
 impl WeighMultiAssets for MultiAssetFilter {
 	fn weigh_multi_assets(&self, weight: Weight) -> XCMWeight {
-		weigh_multi_assets_generic(self, weight, MAX_ASSETS)
-	}
-}
-
-impl WeighMultiAssetsReserve for MultiAssetFilter {
-	fn weigh_multi_assets_reserve(&self, weight: Weight) -> XCMWeight {
-		weigh_multi_assets_generic(self, weight, RESERVE_MAX_ASSETS)
+		let weight = match self {
+			Self::Definite(assets) =>
+				weight.saturating_mul(assets.inner().into_iter().count() as u64),
+			Self::Wild(_) => weight.saturating_mul(MAX_ASSETS as u64),
+		};
+		weight.ref_time()
 	}
 }
 
 impl WeighMultiAssets for MultiAssets {
 	fn weigh_multi_assets(&self, weight: Weight) -> XCMWeight {
-		weight.saturating_mul(self.len() as u64).ref_time()
+		weight.saturating_mul(self.inner().into_iter().count() as u64).ref_time()
 	}
 }
 
@@ -132,7 +125,7 @@ impl<Call> XcmWeightInfo<Call> for StatemineXcmWeight<Call> {
 		_dest: &MultiLocation,
 		_xcm: &Xcm<()>,
 	) -> XCMWeight {
-		assets.weigh_multi_assets_reserve(XcmFungibleWeight::<Runtime>::deposit_reserve_asset())
+		assets.weigh_multi_assets(XcmFungibleWeight::<Runtime>::deposit_reserve_asset())
 	}
 	fn exchange_asset(_give: &MultiAssetFilter, _receive: &MultiAssets) -> XCMWeight {
 		Weight::MAX.ref_time()
@@ -142,7 +135,7 @@ impl<Call> XcmWeightInfo<Call> for StatemineXcmWeight<Call> {
 		_reserve: &MultiLocation,
 		_xcm: &Xcm<()>,
 	) -> XCMWeight {
-		assets.weigh_multi_assets_reserve(XcmGeneric::<Runtime>::initiate_reserve_withdraw())
+		assets.weigh_multi_assets(XcmGeneric::<Runtime>::initiate_reserve_withdraw())
 	}
 	fn initiate_teleport(
 		assets: &MultiAssetFilter,
diff --git a/parachains/runtimes/assets/statemint/src/weights/xcm/mod.rs b/parachains/runtimes/assets/statemint/src/weights/xcm/mod.rs
index 2fbe469aab7..b51f8b207a5 100644
--- a/parachains/runtimes/assets/statemint/src/weights/xcm/mod.rs
+++ b/parachains/runtimes/assets/statemint/src/weights/xcm/mod.rs
@@ -21,7 +21,7 @@ use crate::Runtime;
 use frame_support::weights::Weight;
 use pallet_xcm_benchmarks_fungible::WeightInfo as XcmFungibleWeight;
 use pallet_xcm_benchmarks_generic::WeightInfo as XcmGeneric;
-use parachains_common::xcm_config::weigh_multi_assets_generic;
+use sp_std::prelude::*;
 use xcm::{
 	latest::{prelude::*, Weight as XCMWeight},
 	DoubleEncoded,
@@ -31,29 +31,22 @@ trait WeighMultiAssets {
 	fn weigh_multi_assets(&self, weight: Weight) -> XCMWeight;
 }
 
-trait WeighMultiAssetsReserve {
-	fn weigh_multi_assets_reserve(&self, weight: Weight) -> XCMWeight;
-}
-
-const RESERVE_MAX_ASSETS: u32 = 100;
-/// For teleports and deposits
-const MAX_ASSETS: u32 = 1;
+const MAX_ASSETS: u32 = 100;
 
 impl WeighMultiAssets for MultiAssetFilter {
 	fn weigh_multi_assets(&self, weight: Weight) -> XCMWeight {
-		weigh_multi_assets_generic(self, weight, MAX_ASSETS)
-	}
-}
-
-impl WeighMultiAssetsReserve for MultiAssetFilter {
-	fn weigh_multi_assets_reserve(&self, weight: Weight) -> XCMWeight {
-		weigh_multi_assets_generic(self, weight, RESERVE_MAX_ASSETS)
+		let weight = match self {
+			Self::Definite(assets) =>
+				weight.saturating_mul(assets.inner().into_iter().count() as u64),
+			Self::Wild(_) => weight.saturating_mul(MAX_ASSETS as u64),
+		};
+		weight.ref_time()
 	}
 }
 
 impl WeighMultiAssets for MultiAssets {
 	fn weigh_multi_assets(&self, weight: Weight) -> XCMWeight {
-		weight.saturating_mul(self.len() as u64).ref_time()
+		weight.saturating_mul(self.inner().into_iter().count() as u64).ref_time()
 	}
 }
 
@@ -132,7 +125,7 @@ impl<Call> XcmWeightInfo<Call> for StatemintXcmWeight<Call> {
 		_dest: &MultiLocation,
 		_xcm: &Xcm<()>,
 	) -> XCMWeight {
-		assets.weigh_multi_assets_reserve(XcmFungibleWeight::<Runtime>::deposit_reserve_asset())
+		assets.weigh_multi_assets(XcmFungibleWeight::<Runtime>::deposit_reserve_asset())
 	}
 	fn exchange_asset(_give: &MultiAssetFilter, _receive: &MultiAssets) -> XCMWeight {
 		Weight::MAX.ref_time()
@@ -142,7 +135,7 @@ impl<Call> XcmWeightInfo<Call> for StatemintXcmWeight<Call> {
 		_reserve: &MultiLocation,
 		_xcm: &Xcm<()>,
 	) -> XCMWeight {
-		assets.weigh_multi_assets_reserve(XcmGeneric::<Runtime>::initiate_reserve_withdraw())
+		assets.weigh_multi_assets(XcmGeneric::<Runtime>::initiate_reserve_withdraw())
 	}
 	fn initiate_teleport(
 		assets: &MultiAssetFilter,
diff --git a/parachains/runtimes/assets/westmint/src/weights/xcm/mod.rs b/parachains/runtimes/assets/westmint/src/weights/xcm/mod.rs
index 0c1f96ae7d7..018f8f7d9f7 100644
--- a/parachains/runtimes/assets/westmint/src/weights/xcm/mod.rs
+++ b/parachains/runtimes/assets/westmint/src/weights/xcm/mod.rs
@@ -21,7 +21,7 @@ use crate::Runtime;
 use frame_support::weights::Weight;
 use pallet_xcm_benchmarks_fungible::WeightInfo as XcmFungibleWeight;
 use pallet_xcm_benchmarks_generic::WeightInfo as XcmGeneric;
-use parachains_common::xcm_config::weigh_multi_assets_generic;
+use sp_std::prelude::*;
 use xcm::{
 	latest::{prelude::*, Weight as XCMWeight},
 	DoubleEncoded,
@@ -31,29 +31,22 @@ trait WeighMultiAssets {
 	fn weigh_multi_assets(&self, weight: Weight) -> XCMWeight;
 }
 
-trait WeighMultiAssetsReserve {
-	fn weigh_multi_assets_reserve(&self, weight: Weight) -> XCMWeight;
-}
-
-const RESERVE_MAX_ASSETS: u32 = 100;
-/// For teleports and deposits
-const MAX_ASSETS: u32 = 1;
+const MAX_ASSETS: u32 = 100;
 
 impl WeighMultiAssets for MultiAssetFilter {
 	fn weigh_multi_assets(&self, weight: Weight) -> XCMWeight {
-		weigh_multi_assets_generic(self, weight, MAX_ASSETS)
-	}
-}
-
-impl WeighMultiAssetsReserve for MultiAssetFilter {
-	fn weigh_multi_assets_reserve(&self, weight: Weight) -> XCMWeight {
-		weigh_multi_assets_generic(self, weight, RESERVE_MAX_ASSETS)
+		let weight = match self {
+			Self::Definite(assets) =>
+				weight.saturating_mul(assets.inner().into_iter().count() as u64),
+			Self::Wild(_) => weight.saturating_mul(MAX_ASSETS as u64),
+		};
+		weight.ref_time()
 	}
 }
 
 impl WeighMultiAssets for MultiAssets {
 	fn weigh_multi_assets(&self, weight: Weight) -> XCMWeight {
-		weight.saturating_mul(self.len() as u64).ref_time()
+		weight.saturating_mul(self.inner().into_iter().count() as u64).ref_time()
 	}
 }
 
@@ -132,7 +125,7 @@ impl<Call> XcmWeightInfo<Call> for WestmintXcmWeight<Call> {
 		_dest: &MultiLocation,
 		_xcm: &Xcm<()>,
 	) -> XCMWeight {
-		assets.weigh_multi_assets_reserve(XcmFungibleWeight::<Runtime>::deposit_reserve_asset())
+		assets.weigh_multi_assets(XcmFungibleWeight::<Runtime>::deposit_reserve_asset())
 	}
 	fn exchange_asset(_give: &MultiAssetFilter, _receive: &MultiAssets) -> XCMWeight {
 		Weight::MAX.ref_time()
@@ -142,7 +135,7 @@ impl<Call> XcmWeightInfo<Call> for WestmintXcmWeight<Call> {
 		_reserve: &MultiLocation,
 		_xcm: &Xcm<()>,
 	) -> XCMWeight {
-		assets.weigh_multi_assets_reserve(XcmGeneric::<Runtime>::initiate_reserve_withdraw())
+		assets.weigh_multi_assets(XcmGeneric::<Runtime>::initiate_reserve_withdraw())
 	}
 	fn initiate_teleport(
 		assets: &MultiAssetFilter,