Well your gonna have to change the belt sooner or later. Remember that the more power your motor is maken the more stress it is putting on the engnie parts. As far as a belt going bad. You can look at the teeth and see them cracking. I don't know if you have a cut cover to were your belt is showing. If you don't and plan on cutting it for camgear adjustment I would cut circles instead of cutting off the whole camgear side. I don't know if that makes scence to you. I fucked up and cut the whole top of and the belt is exposed to more water/dirt.....anyway how that helps.....