RE: New Warhead Evo, shearing input gear pin,
To set the slipper pad tighten the nut for the tension spring until it goes snug, not to tight then the say to back it off a 1/4 turn but I take mine back a little further to allow a little more slipping. The slipper pad is designed to slip when there is a large amount of torque on the tranny. This helps to prevent braking of the gears. This is why some guys keep braking there trannys when they replace the motor because they want it to shoot off like a rocket but don't realize it only has plastic gears.