I fixed it yesterday, it was one of the sun gears that broke in two. I'll try readjusting my slipper again, it's already pretty loose but I gotta do something. Punch control is at 70% and I'm running Proline 40 series Mashers mounted on Losi 420 dish rims. They are not that heavy. I also had a bent front shock shaft. Yeah, 5 mm thick shaft is not enough to keep it from bending. Well there was this 12 foot high dirt hill and I jumped it sending the truck I don't how high. I was getting neck pains looking at it

Good thing I made a spare.