massive reconfiguration time again.

j par said
Yeah I'm not paying much attention to the O2 sensor as far as worrying about the tune.. more so how it's actually running and operating. I just don't think the spark plugs need to look that dark that new with only 12 or 15 miles on them? Also that really crappy running as I roll off of a heavy throttle softly just kind of wants to stumble its way down? And definitely a large hiccup if I jam it to the floor out of nowhere in a high gear.. I'm feeling I can tighten the secondary doors even more.. again my old carburetors grin best one step cleaner primary and secondary. That is 1250 CFM..

I think (without being there, of course) you are fighting different issues at the same time and trying to solve it with one course of tuning. Get your primaries in sync and working flawlessly first. I'd disconnect the back secondary linkage on both carbs and focus on primaries only. Get it to work on both primaries at idle, part throttle, and sudden mash to the floor. Then introduce the rears by hooking up the secondaries. I've done this before (not on dual quads) to sort out one issue at a time.