Country Boy: Lay the shoes and the adjuster in the drum. Just lay them in there with the adjuster in place. If the shoes are too wide they will stick out and you have the wrong ones. If it all fits in then look to see if the curve on the drum and the curve to the shoes match. If that is good measure the gap at the ends where the wheel cylinder fits. Slip the shoes back on the backing plate and measure the gap again. If the gap is the same or smaller then you have an installation problem and will most likely be able to figure it out. 3B has a very good point. Turn that adjuster all the way in. Lube it while it is out and get the threads clean. If the old adjuster is still around put it next to the new one and see if they are the same. On the rear you have the lever and fulcrum that works with the emergency brake cable. That can push the shoes apart at the top if it is installed the wrong way up or in the wrong cut outs. You will get it working I am sure. Don't turn the drums. They are thin to begin with. And turning them might make them crack or warp. I don't know how hard they are to find, but I would bet they will get expensive.

Steve H