Been meaning to follow up this thread, but wanted to wait until I had a chance to go shoot the gun first. Did so today, ran 50 rounds through it without a hiccup.
S&W actually sent me an entirely new striker assembly and rear slide cover. They arrived the Tuesday after my last post. I went ahead and just dropped in the whole new assembly, so the trigger now feels a bit stiff and gritty again (will need some range time and dry fire time to smooth it out again, or might just put my old worn in striker back into the gun). But I now have the beginnings of my own personal little Walther PPS spare parts bag
So all's well that ends well I guess.
Oh and some interesting tidbits for those who're interested in details of the PPS:
Here is the broken striker guide (left) and its replacement (right):
http://i850.photobucket.com/albums/ab70 ... c7347e.jpg" onclick="window.open(this.href);return false;
Here is a difference I noticed in the "striker return spring" - smaller (or more compacted) spring on the left is original to the gun; larger (more expanded) spring on right is from the new striker assembly:
http://i850.photobucket.com/albums/ab70 ... 28f032.jpg" onclick="window.open(this.href);return false;