Sorry I am not real familiar with the terms. When you mentioned bushing, are you talking about the metal ball on the end of the armature or something else.

When I took it apart the ball part came out of the little cage in the cap fairly easily. I have put the motor together a couple times now and it doesn't seem to have much trouble going back in.but if I understand you're saying the ball should have remained in the cage under brush holder?

Also as for the winding, the wrapped paper like insulation came apart. I assume this is what you are referring. How should I go about covering that? Any suggestions is certainly appreciated as well as your expertise.