Edit: I was saying it could be the reason, if they look like the first pic try removing the hub with them.
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I took the hub off with the drum and took it to the driveline and axle shop down the street and he had a swedge cutter that he used to cut the swedging off the studs, so the drum could be removed.
The cutter looked like hole saw, but had thicker teeth.
I had him replace the studs in the hub at the same time.