I ordered a new flexplate from Napa and manged to get the original one off last night.

They look EXACTLY the same. (Except for the fact that the original has the teeth ground down a bit).

There was a washer/plate that was on the flexplate when I removed it (between the bolds and the flexplate). Was this the correct location for the plate, or, perhaps, was this something that was supposed to go between the flexplate and crank?

This is my first go at an AMC V8, so I'm a little inexperienced at this.

I'm at a loss at what to check for next. Anymore ideas?