I just rebuilt my 902/01 and was ready to bolt up my starter, and realized that I have three early Bosch starters. Visually, the teeth on the shafts all look good and there is no slop. One of them came out of my racecar as it was having issues. The other two I have inherited with various other acquisitions. Is there a quick and dirty test to determine a good starter (and solenoid) from a not so good starter? I realize that I could just jumper the starter on my bench...but is that the best way to do it? Should I be testing the continuity of the windings...or checking out the brushes? I realize that it isn't a big deal to swap out a starter once it is in the car...but if I could determine beforehand...life would be that much better.

Thanks

Lars