Does your Blitz have a slipper clutch? If yes, it's best to set it so it slips the first 2 feet of take off. Also, it would be good to turn your punch down on the ESC which is way less stress on the drive train.
Best regards,
Brian
Big + 1 on those two points the mesh is just one part of the equation goin from 2s to 3 is significant and thus requires some dialing down of initial hole shot/out of the gate punch that needs to have some give ...if that slipper is cranked all the down then it's no wonder the spurs are not holding up and adjust through ESC settings and consider also the surface your riding on, if traction is high bite then adjust accordingly...good luck