I am having an issue with the magneto rubbing on stator when I tighten it up, I did have to fabricate a new key, but I am having trouble understanding why it is hitting? Anyone have any ideas for me? A friend of mine re-built the engine and the stator/point assembly was off because I had to find a key for it........ Scratching my head and frustrated. ANY M56 guru's out there that can help????? thanks