rear drum brakes issue

You probably have too wide of a break Shoe in it, something other than what is supposed to be in there.

Do you have the wider B Body shoes in it, like 2 1/2" wide?

☆☆☆☆☆
that is / was my thinking, so I spaced the drum out with shims. no help but will take another look at it.

how wide should the shoes be?