Modding

As I usually do:
1. I create a clone of the SMD file.
2. I divide it into the parts I need.
3. I attach whatever I want to them.
4. I copy the skinning from the original SMD file.
5. In Max or Maya, I adjust the skinning to fit the finished meshes.

Are there any tricks that can help determine which bone belongs to which mesh? Because there can be a LOT of bones, and sorting them manually by eye across 3-4 meshes is a very difficult task.

Are there any tools in 3ds Max that can make this process easier?