I am replacing the stator generator on the yamaha rhino 660. I spent the day getting to it (it is inside of the starter clutch and behind the water pump). I was unbolting a wire holder that had two Allen wrench screws. Apparently, they was baked in and the heads sheared off. Now there are two bolts baked into the starter clutch/ water pump cover. The rhino is an 04 660. I really want this thing fixed this a big kick in the a$$. Any ideas on getting them out other than drilling?