Originally posted by Mars
my gearing was not too high last time and the motor was not really hot. I'll check the condition of the brush and the comm and decide whether I should gear it higher 
Mars: since you rmotor is a closed end housing. Do you do the water quench run-in that people use to do with the old Tamiya silver cans?
I like the idea of a removable armature to true the comm.... it would all be too easy to fry the motor with a bit of overgearing!