Okay thats not to hard, On your 2nd gear shift adjustment screw, tighten it down all the way, but easily, don't crush the spring, turn the 2nd gear adjustment screw out 5 turns, you want it to shift from about 25 to 35 feet way from a stand still, on the 3rd gear run the adjustment screw inall the way, then out about 7 1/2 turns out, and that should set your shifting points. If they are still not shifting then you have a problem with the springs being crushed from being tightened to tight or your ballbearing at the end of the spring is sticking, or your hubs or wore out.