I put them back where they were originally. Hooked up the carb sync tool, made a pretty big adjustment to carb #1, and a small tweak to 4 and she runs great now. Wish I would have known carb syncing was that easy.
-2001 Tahoe original 5.3 4x4 only 435k
-Down to 2 three wheelers
-1985 V65 Magna
-1973 CT70 with 125cc motor