I can give this a try
I can spin them only after its been sitting for a while. If I tried to spin them after driving they will not move. I should also say that the inner pads on both wheels are worn more than the outer ones.
When you say "they" are you talking about just the fronts? You need to keep driving around the block until they act up and get back to your driveway, floor jack and stands to figure out which ones and then release pressure to diagnose. Rear shoes put on backwards (primary shoes to the rear) can self energize.
