Are Front Brake Drums a "Press" Fit"?

These studs were not the swedge type. The are serrated like the ones that were removed and installed with an impact wrench (not my idea, the fabricator who I employed to help me out).

Nonetheless, it appears the serrations came out too far after installation and are preventing the drum from seating as perhaps you can see in photo #1 (it does not seem to be a problem with "press fit", as I was asking earlier).

The funny thing is, the replacement wheel studs appear to have the same measurement in the serrated area as the old ones (actually, with the naked eye, it looks to me like the new studs have a slightly shorter/smaller serrated area which is really weird. If that's the case, how could there be a problem now with them sticking out too far? (see photos #2 & #3 where the item with the shinier threads is the old piece)

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