Thanks for the reply. My driveway is fairly level, so I'm guessing because the rubber inserts are so worn, the engine rocked back slightly when I took this one apart. It looks like it's only about 1/2 inch or less, but it's just enough to be a pain when it comes to reattaching.

I figured I might as well line them up. I come from an aviation background, so its kind of programmed into me to get things as close to perfect as humanly possible. (or, maybe its a character flaw).

Anyway, thanks for the reply...it was helpful.