Sorry if I'm repeating whats already been said but I think the Ramps are Adjustable and moving. The clicker pin is adjustable to set the ramp angle. The Ramp is moving as the roller pushes on it due to centri***al force pushing on the ramp at an angle and putting side force on the belt thus running it higher in the sheave and increacing the ratio between primary and secondary sheaves and making the sled accelerate. Changing the angle of the ramps gives the rollers and pins more or less leverage on the belt to push it higher or lower in the sheaves. The ramp moves in and out over the roller, wide open throttle the ramp moves toward the engine pushing on the belt and when you let off the spring pushes it back out.
When you are unlucky with the xp you got (****ty Primary Clutch) the bushing seizes on the shaft because it dosn't fit the clutches and the rollers have to push really hard on the ramps to make them move so the rpm go really high to generate the cyntri***al force then the bushing breaks loose and the sheaves push the belt up too high in the clutch and the rpm drops because the clutch is in too high of a gear for the engine to produce the hps to stay at 8200rpm. So guys are throwing bigger weights and hevier springs in them to fix the problem that is rooted with the bushing.
When you are unlucky with the xp you got (****ty Primary Clutch) the bushing seizes on the shaft because it dosn't fit the clutches and the rollers have to push really hard on the ramps to make them move so the rpm go really high to generate the cyntri***al force then the bushing breaks loose and the sheaves push the belt up too high in the clutch and the rpm drops because the clutch is in too high of a gear for the engine to produce the hps to stay at 8200rpm. So guys are throwing bigger weights and hevier springs in them to fix the problem that is rooted with the bushing.