Well, FedEx mailing label is on the way....CZ is handling it. Hopefully Meprolight is aware of the issue and tightening the quality on their sights.
Nah, Meprolite has been bleepty for years: tritium inserts going dead, super soft metal sight bases, etc. They have no incentive to improve, since they supply SIG with all their night sights and making money hand over fist.
The good news is that the Rami front sight dovetail is a standard Novak cut, so you can use any Novak compatible front sights that zero your target.
The rear sight is a little more difficult. You can use a standard CZ75 Trijicon rear sight, but it will shorten the sight radius slightly, and the step down on the rear of the Rami frame will show.