So, went to the track tonight and managed to get the tippy out of my USGT and was left with a VERY competitive setup. So happy about that. So, I think the catalyst for this all was the tires getting ballooned, and the LHS is out of them, so I'm kinda SOL unless I order somewhere same week, so I HAD to come up with a setup that worked with the tires like this. I think one of the biggest things was realizing how much more up travel the car has with these tires when they're ballooned.
In any case, what I did was try all ranges of camber and downstop (travel). I also tried lengthening my front camber link and different amounts of camber. The biggest effect was the front camber by far. The droop/downstop/travel (whatever you wanna call it, I measure it as downstop) was significant, but never removed it entirely. That took camber changes. I tried so much down stop that I ended up at 3mm front ride height with preload... so yeah, didn't matter how much I did, it never totally removed it, but it contributed greatly to the end product.
What I ended up with is going from 5/4 down stop to 7/6 (2mm less travel) and 0 degrees camber all the way around. I was able to match my best fast lap ever with this setup. The car is dialed now. I lost a bit of turn-in grab, but then again, that's what was causing issues. I went with some drag brake and was able to get right back to where I should be (or faster) by doing less pitching the car into the corner and more smooth flowing arcs with the drag brake. Normally I never use drag brake, but this layout is so tight and slow that getting the right trail brake every corner is impossible.
Wayne