the depth of the pinion means nothing if the pinion teeth are off , the correct way to check this is to ink up the gears and spin them around and look for the spot in the ink where the gears are meshing , it should be as close to the center of the tooth as possible . what i hear is that on the fms gears the whole tooth will hit when in the center , and on the richmonds , there is usually a high spot on each tooth which means you must get that high spot right in the center of the tooth and then after the gear breks in it will be at full contact on the whole tooth. i have had experience with each of these gears and i found this to be true .
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