Good morning Mike!
There is more SA-35 chatter in High Power sections on other forums (1911 Forum, High Power Collectors, etc).
Latest reports are of serial numbers in the 6000 range. Mine is 3094. Generally, through the SA-35 looks great, the edges are sharp where they should be rounded and that could lead to pain at the range. There are extraction problems which can be fixed by installing an original FN extractor and a new extractor spring (BH Spring Solutions). The slide to frame fit is pretty tight, much like the Tisas BR9... many think the frame and slide are forged by Tisas in Turkey. It it is, the Turks are far better at finishing the pistol than the folks at Springfield in rural Illinois. I have a stainless steel Tisas and it is beautiful and reliable, after a problem with a broken extractor!
I have not fired mine yet. I always make some improvements to any High Power I buy. For my SA-35, after I get a chance to shoot her, I am leaning towards sending her off to BHSS for optimization, new improved parts and to remove those sharp edges, which will require a complete refinishing job. I dream of a real deep polished blue. That would cost an extra $300 over a gorgeous Ceracote... not sure it is worth having such a one of a kind SA-35.
It is a solid pistol. Springfield does not know how to make a High Power. They simply do enough assembly and finishing work in Geneseo to be able to say it is Made in America. Because of this, warranty service may be less than satisfying.
Cheers,
Tim