Thanks for the reply. I got it up and running again.

yetanotherBob wrote:
> The black carbon block attached to the long spring is what should
> contact the motor shaft, so that goes into the hole first. The surface
> of the new brush that contacts the shaft may have a convex curve already
> formed into it. If you imagine that you're looking at the motor head
> from front to back, the side view of the brushes when properly installed
> would be like this: