TRF511 pinion/spur gear mesh

[AaronR]

In about 3 practice/race nights (4-5 runs each night), I've killed 2 spur gears. I never went thru spur gears like this in either of my previous 501s. Initial gear mesh was as spot on as I think is appropriate. The only thing I can think if is the motor slide mount moved a little bit. Anyone else having issues lately?

Onto the 3rd spur...