Front drum problems... need help

[Thomlost]

So I have a 1968 GMC C2500 3/4ton LB and I recently replaced the brakes and tried to take the drums into a shop to get turned and after about 3 failed attempts (because apparently no one has the specs anymore) I decided to just buy new drums. I got them from Auto Zone and got home and as I was installing them I noticed the screw holes didn't line up and there was no adjustment hole/window so I took them back and showed them the problem but of course they had no other options so I got my money back and went to O'Reilly. Well apparently they have the exact same product... Does anyone make a new drum for my truck that actually has the correct screw offset and an adjustment window for the front brakes (and preferably isn't made in China)?