Dumping the FBO timing advance plate.

mbaird said
My magnum only needs 32 total ( initial + mechanical ). Don’t recall how much VA I have … think its 17 which puts us about the same in the end.

It could be that the thin fbo plate is getting notched at the point of most common rpm . ???

There are a few rub marks on the bottom side of the plate, but you can’t feel them. (Top, and both sides in the pic)