Originally Posted by
BrodieMan
Set your mesh, than rotate your spur 90 degrees or so, check again & reset if needed. Repeat a few times. Spurs are not always perfectly round so if you have your mesh set right at one point, there might be a gap that is too large in another location which can cause your pinion to strip the spur gears.
I had an out of round spur that did not become apparent until i changed from 24T to 32T pinion, i could not get and even mesh and in haste got it as good as i could and after a few laps chewed the spur to pieces, new spur was much more round and i never had that trouble since.