I've managed to get the 89/22 to reach and the 86/22 only JUST reaches (almost half way into the spur gear at BEST) so high potential of it stripping. Here is a pic of the 86/19 combo. As you can see, the pinion is a fair bit away and the motor is as close as it can be on the screw holes and the can is being stopped by the gearbox.
I thought all pinions were, pretty much, the same. Only differences being width or space between the motor and edge of the pinion. There is no way whatsoever that I can get the motor closer.
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