As far as I know, no-one's smoked in the car - the previous owner was an older lady who traded it in for a newer Mercedes and she took great care of the car... the leather was barely worn, no scratches or tears in it at all.

And yes, I think it's the brushes too, and I thoroughly expect the motor to fail again someday at which point I'll replace it completley.

The clip that holds the motor in place seemed reluctant to be removed - what's the trick, and can you reuse the old one, or do you have to get a new one?