NJZ- Glad you didn't seriously wreck! That sounds pretty scary. If you think the problem may have been being able to get to your mounting bolts, while checking chain tension I noticed my motor was loose at the plate. Since it's pushed all the way to the left, there's very little room to get a tool on the motor mount bolt from underneath. I sacrificed a super high quality 3/8 "Pittsburgh CHROME VANADIUM INDIA" wrench fo... wait- India?
lol Anyway, I made what was needed to get in that space with the handy Dremmel. You might do the same.
BTW the thread title had me chuckling!