I read about a company that makes 1911 slide stops thicker than standard specs so I bought one of those. It dropped right in and fits more tighter, but there is still a slight ammount of wobble in and out. I do not know if a proper 1911 is supposed to have ZERO wobble, but it now locks back most of my magazines. The quality ones anyway.
Aslo, I replaced the slide spring with a standard 16 pound (as the good John M. Browning intended) and found that the old spring had been worn down to maby an 8-10 pound spring! That pounding might explain why the slide stop is so beat up.