My buddy has a 1995 KTM 300 EXC sitting in his barn that I want. He said "it keeps shearing flywheel keys". He put a new one in it now, but it needs the timing sent. What all is required to set the timing on these things? He said theres an adjustable plate that has a lot of adjustment, and he had it in the middle previously and it ran decent but he felt it was lacking power with that setting, than what it was set at before he replaced the key. What would cause it to kill flywheel keys? I mean, I understand HOW it happens, but it shouldnt happen so often, ya know?