I hear ya
I'm in the same boat.... I've had some run-ins with real dip-$h!ts in SD pounding out my last set of USP sights just to break the trijicon bulbs. BUT, I have gone to Duncan's in San Marcos a few times now, and they were always able to do stuff while I wait for 10-20 mins. Coincidentally, I had sight work both times I went in for my S&W M&P 15 and my Winchester 1300 Defender. I asked the gunsmith if he had the actual press, or some homebrew variation of it for the USP, and he lead me to believe he did. He quoted $35.00 out the door so I'll probably call him soon to discuss the details when my new sights arrive. Either way, I'll probably trust them to do the job since I'm a bit HK particular like you.
On anther USP note, I just bought the .40 Quik Comp and wanted to see if you guys know anyone in SD County that does custom aluminum machining so we can replicate a few of these and add railing options?