I will be moving my front shackle hangers forward tomorrow (just like on 52" swap, but still with my 6" stock length springs) and will make my shackles the appropriate length to set my castor correctly. I figured I'd put the truck on a lift, leave the front of the spring hooked up, let the rear of the spring float (tires on), lay an angle finder on the knuckle (D60), find the optimum castor angle, measure hole-to-hole, and make my shackles from that. (Wow, what a run-on sentence ). One problem... what is the optimum castor angle? I will also be intalling some zero-rates and moving the axle 1.5" forward, so I'll have roughly 7" of lift and the axle 1.5" forward. Basically I need to balance pinion angle and castor angle. What's a good "happy medium" for the castor? 6 degrees? more? less? I'm also installing hydraulic assist. I've been battling death wobble, and I know the hyd assist will "cure" it, but I would like to get the castor as good as possible to lessen what the band-aid is covering up. I will also be paying a shop to set the toe before I weld the ram in place. Kingpins are good and shimmed approx 1/8"... the main source of the DW is unbalanced 40" TSLs on recentered hummer wheels (hence the hyd assist). If necessary to get the alignment right, I will buy one of those Tom Wood's superflex joints to account for flex and less than desireable pinion angle. Hopefully it will not come to that. Rotating the knuckles and/or a fancy-schmancy front driveshaft are not currently in the budget. Thoughts? Thanks in advance.