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Outside is new and old rear, center is old front. No "swedge" of any sorts to cut/remove. Any other ideas?

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From the looks of it the center stud in the pic was swedged in.
It's fatter at the top just below the threaded area.
You can see where the splines in the drum were cut into it when it was forced out.

The holes in the drum are now larger than what the factory studs require. They're never gonna fit tight using the stock studs.

It's gonna take a stud with a larger splined area.
You need to go to a real auto parts store (NAPA, etc) where someone that actually knows about cars (and parts) can help you find a stud that will fit.