Pinion is set by rear upper control arms, castor by front lower control arms.
if you have DW how do you know your rear is set right? DW is a totally different animal than bump steer. Could be lots of things how are your ball joints? Tires? are the drive shafts out of balance? Tie rod bent, etc... lots of things could be causing dw, try removing one "item" at a time and figure out which variable is causing the dw. Your other thread about drag link flip , that can help but its not gonna be a magic cure all for DW.
2011 Jk 2 door 6 speed. 5.13 gears, 1350 driveshafts, cooper sst+ 35s, warn 9.5, various armor, 1/4 pounder bumper, 12 inch King coil overs, CB, still running the dana 30 sleeved and gusseted up front. Someday wanna go with 1 ton axels but for now I love my JK.