Having a fit with the passenger's drum on '67 Dart

I am in the process of reworking the brakes on our '67 Dodge Dart with 9" drums all around. The driver's side has really been no problem so far, and I have replaced the wheel cylinder, shoes and springs with Raybestos parts from RockAuto.com.

Looks like somebody must have previously stripped the threads on the lugs on the driver's side and put new ones in (I did that on my '66 when I was out of college - popped 2 lugs off before I knew they were reverse thread). This drum was in two pieces (outer part of the drum and the inner part with bearings)... and by "two-piece drum," I mean that the driver and passenger drums are both identical to each other.

It looks like when the lugs were replaced in the driver's side drum they took out some anchor fasteners that hold the inner housing for the bearings to the outer drum. That makes the driver's side drum essentially a two-piece drum while the passenger's side is a one-piece drum - because the passenger's side drum is exactly the same but has those anchor fasteners holding it together.

I've turned the drums and am going back to the passenger side. I've replaced the wheel cylinder, springs and shoes there, but just like when I tried to take the drum off to replace the parts, now it won't go back on. The adjuster is all the way down tight to allow for the most room for the shoes to contract, and I was hoping with new shoes and everything something might work to get it on without this much trouble.

What now? The adjuster on the driver's side is actually screwed out part of the way and there was still no problem putting that drum back on. The passenger's side won't go on, and if it did it would be so tight that it probably would barely move. The passenger drum, by the way, is still one-piece, not two like the driver's side. Looks like the original lugs are intact.

I've never run into anything like this, so I'm at a loss. Any help is greatly appreciated.