[Chimera-users] Removing buried substructures

Hi everyone The EM map I am currently working on contains hidden buried substructures and I want to remove these substructures from the map, leaving only the outer layer. Because the map I am working on is very complex, I am finding it difficult to remove the buried substructures using the Volume-eraser Tool. Consequently, I would greatly appreciate any advice on how to remove the buried substructures, without removing the outer layer. Thanks Brian