Yes sir.... My CC Squarebody dually has -.5 Camber & 6.9/7.4 Caster. It doesn't drive like a dually.
I ask my guy to target the -.5 Camber minimum w/as much Caster as that Camber target allows on every vehicle. The only one that wouldn't cooperate was the latest '99 OBS CC 3/4 ton. Caster topped out in the 3's. The eccentrics just don't offer enough movement even w/the knock-out gone. Aftermarket adjustable arms are available now but they utilize the smaller BJ footprint (Lt Duty 3/4 ton & heavy 1/2 ton). I'm trying to work around that now as well.
You can get offset upper control arm bushings for those but you can't stack them to gain caster. Since you typically have to rob Peter to pay Paul, I bet you could still come out ahead in that scenario.