i am going to look at ax SX that looks decent and is only 350 bucks. he says that it occasionally pops out of gear when riding. i assume its the auto clutch needing some help or replacement which wont cost more that about 100bucks. what else can cause this? i dont want to get into a full bottom end swap if its a ton of work. i see plenty of bottom ends on ebay but not sure how involved changing it over is. clutch seems easier for sure