W.T.F., "Shirley you're kidding" --- I'm sorry and I'll stop calling you Shirley.
You "lucked-out" on the slide to frame fit (a very hard fix) and then you changed the firing pin, all the related springs and fiddled with the sear spring. Now the gun is close to where it should have been when it left the Ruger facility, because of your skilled efforts and the price of the parts.
How about loose grip screws, absent 25 line per inch checkering on the forestrap, non-crowned barrel, machine marks, off-center cut dust cover, barrel lug to slide lug miss match etc. etc. etc.
I wore down a series 70 Gold Cup, pounded a series 80 stainless Government Model and I'm trying the same with a Kimber Eclipse Target II and I've never seen or heard of crap like I have with this SR 1911. Mind you we didn't have the internet, "back in the day", but I'm glad we do now.
How long before we pronounce the SR 1911 a Canadian Tire, "On Sale All Next Week", special P.O.S. and put it on the WALL OF SHAME?