I am currently doing a full rebuild on my 99 WR400. I have read that the slide in this years carb are prone to break and can cause major engine problems when they do. How do I know if its ok? Can I buy an updated part that has been improved or do I need a new carby? I dont want to buy a whole new carby but want to be sure its not going to fail. Would simply checking it for visalbe cracks every x hrs allow me to see it before its too late?