To clarify, now that I've spent more time on this, I guess it's the "spring" behaviour that I want to disable. None of the settings on the UIScrollView seem to turn it off though? I figured Drag Effect "None" would do it, but no dice

And, just to add another question while I'm at it ...

... When the map displays, I'm firing my "Map Reset" code which basically just does the centering on the map marker. For some reason though, it doesn't work the first time you open the map. Only every time after that (see video). If anyone has any clues as to why that might be, I'd love some hints because it's kind of crappy as it is, and I'm stumped if I can figure out why it's not doing it the first time with the exact same "Map Show" code.
https://youtu.be/4e6QJRfaKEA