Re: 46-48 front drum replacement, or??
I would start out by shimming the drum with washers and putting a couple lug nuts on to see if spins free.
If that works, I would next check to make sure the backing plates are not bent; clamp a wire on the hub flange with a point bent and placed close to the backing plate and and turn the hub to see how the plate looks (I would normally use a dial indicator; but the mag base wouldn't stick in this case).
You can also check the hub flange for run-out by clamping the wire to to the backing plate and spinning the hub.
Could also measure the hub; the face is about 3-1/8" out from the spindle face; probably a little hard to do with the backing plate in place.
Between these checks you should find the problem.
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