Well I'm new to the forum here, so first off hello to everyone. Well here is my really long story. I have a 1992 Timberwolf 250 and I'm having some problems with it. First off the starter is acting up. It will make a grinding noise when I am cranking in over, but not all the time, its only about 40% of the time. So I figured my starter drive was missing some teeth or the reducer gear or flywheel were. When I took the starter of everything was looking strong with no chips or missing teeth. After this I put the starter back on and with the spark plug out it would turn over and never miss a beat. As soon as I put the plug back in, it does the same thing, grinds 40% of the time. Is my starter drive bad or the whole starter? Any other suggestions?