Rear Drum Brakes Grabbing

[Sensei]

Here is the deal, I have new fron Disc brakes, New master cylinder and Booster, New Rear Brake Shoes and slave cylinders on both. They all bleed and flow easily, Long linings in rear and shorts in front of both sides, correct adjusters on the correct sides, however on my passenger side after a while driving and it self adjusting only that side get to tight and starts grabbing or I should say braking. Make me feel like I'm towing the qween mary. Put it up on lift and can turn it by hand in reverse but not forward. I have also welded up the six rub pads on the backing plates and resurfaced then as they did have bad grooves. Emergency cables have been disconnected and or loosened with no changes. With Drum off the axle moves freely so bearing is good and there are no leakes. Drums have been checked for out of round and are good. All Springs are new and in great shape. What else is there?

Has anyone ever got a bad set of shoes, or does anyone else have any ideas?