I just got a motor for my bike and mounted it up last week. Well, if it can go wrong, it pretty much has. Someone wanted to ride it, so I let her. She gave it full throttle and smashed into a pole in the school parking lot. Ever since then, it has idled fast or not at all. Then someone stole it from me and rammed the muffler into the loading dock. Fortunately, the weld on the muffler- and not the head- broke. My friend welded that for me, but accidentally broke the gasket on it. It was still idling high then. So I put on my earplugs and went up to the auto parts store to get gasket material. Everyone was watching. When I got there, oil was all over the place. I've been running on 16:1, as the instructions say, but I've put a little straight gas into my tank to dilute the oil a bit, thinking that was the problem. So I replaced the muffler gasket and replaced the carb gasket to be sure that wasn't the cause of my air leak. It still idled high! So I decided to pull off the head. I did, and the cylinder was very clean. I put the gasket material on there. That fixed the idle speed (for a while) but it lost power, and I had to pedal it home. I pulled the head off again, and tried to take the gasket material off. Lo and behold, it is stuck. I don't know how to get it off. I scraped and scraped. So I just put it back on, hoping it would work. It now idles really fast, and I can put my hand down and feel the air leaking out of the head. Yes- out. I always thought it sucked extra air in. So, anyway, what do I do?