I have an 02 YZ250 and today after stopping for a break and some liquids, I jumped to start my bike, kicked it and new immediately that something was wrong. The kickstart felt strained. I broke the kickstart shaft and cracked the aluminum cover that encloses the case. My question: 1. Is it hard to fix? 2. Is this at all common? Is this a weakness of this year and model. The bike is new to me so I'm not too familiar with any issues. 3. What could cause this to happen? Internal, metal fatigue?? Any thoughts, comments and suggestions are appreciated.