I had a guy bring me an ATV that was experiencing the very behavior you're describing. I installed a washer under the clutch retaining bolt that closed the belt gap up by about 1/16". This fixed it. You can purchase special adjustable pieces that do the same thing.I don't recall saying what I wanted to do?? I love the way these ways drive around (very low rpms so we can hear each other talk while riding), I just want to get rid of the snap into engagement. I guess my next question is how I should modify these to alleviate that problem... like, how much of that "hump should I grind down"? Maybe just blend the roller resting position into the profile about midway down or so?