Left rear brake drum gets hot

So I found a part number on the shoes. They go to a 1977 chevy caprice. The adjusters are on the correct sides, I pulled the cable the lever is attached to and it moves the adjuster out, and returns to its position once you let it go. I bought new shoes and one drum. I did find out the drum for a 77 caprice has a different bolt pattern, so they found one for a 68 charger and it looks exactly like the old one I had. The rear brakes both are getting to about 230 degrees now, vs just the left side like before. I lifted it up and notice the wheels will turn backwards somewhat easy, but like lock up when try to spin them forwards. I grabbed a wrench and opened the bleeder screw at the wheel cylinder on the left side, and no pressure in the lines. So I suspect the shoes are grabbing the drum and something mechanical is wrong.