Ya, I had a look at my tops where the spring seats and there is about a 1/4 inch difference in diameter between the o-ring and spring. My slides look like brand new, smooth and still black with no signs of wear. Apparently the guy that owned it before me had the problem and he had only ridden it a few times in the dunes since new. When the carbs are assembled and I push the thumb throttle, I can here and feel a faint click inside them 2 to 3 times when I apply it slowly from off to WOT. Sounds like the spring to me but don't know for sure. What I do know for sure is that it's pissin' me off!