So after about maybe an hour of run time through my new savage x the starting pin spring broke and seems to be bent.Thankfully HPI is replacing it for free. So my question is, what are the best upgrades I can make to my savage to improve durability. Also, would tightening the slipper clutch stop my wheels from spinning with no throttle appiled?
Because my car still stalls when I let go of the throttle, but it wants to take off on me.

Turn your idle down via turning the idle screw counter clockwise.

-Josh-

If that spring breaks again just use the spring out of a pocket lighter. If it's too long cut it in half and you have two.