Hey Gents!
Got it all figured out and fit up. Turns out my biggest point of hang up was the bottom of the barrel. I just didn't whittle it down far enough. Once I started knocking that down, lug engagement got better and better, and the slide moved further and further out until I got full lockup. I always had the barrel bathed in blue sharpie, but with the surfaces being polished out really smooth, nothing ever wore off to give me any bind spot indicators. I thought I was in the clear.
Now, everything does what it's supposed to, and she locks up nice and tight. No gaps, no high spots, and full slide travel.
Thank you all!!
Smitty