I’ve got a buddy that bought a rock island 1911 in 10mm and had been having problems with it since he bought it. He’s been getting the run around from rock island support. It has feed issues. About every 3-4 round he gets a FTF. We’ve tried 3 different kinds of ammo and 2 different kinds of mags and still the same issue.Just to note, RIA dovetails are not standard size. It's possible to replacements, just gotta be careful.
Also, I've heard Armscor (in Nevada) provides good support. But I've never had to use it.
In general, unless you specifically want GI, I'd recommend upgraded sights and extended beaver tail. That seems to be the standard configuration, if not designated as GI.