Originally Posted by brucemg51
Looks like I won't have to bend the frame at all. The problem was that the bolts holding the tensioner to the frame were stripped so I couldn't keep them tight. Every time they'd loosen up, the tensioner moved and caused the chain to leave the sprocket.
I love how most people can eventually answer their own questions if they just keep trying to find the real problem.
(Now, aren't you glad you didn't bend your frame?)