I got a motor kit from Chris Hill in thunder bay. It works great but the pedal arm does not seem to want to clear the muffler well. It dings it every time it goes around. My friend who installed it had to take a hammer to it to put dents in it. It clears it much better then before. It wouldn't even go past the exhaust the pedal arm. He even tried bending the exhaust abit and that worked for a couple days and now it seems it has bent back and making the pedal arm hit it when I have to pedal. Suggestions ?