Rake Vs. Caster?

bm2004x

Test Drive
Location
United States
I have a serious Caster issue i think. I am reading 3+ degrees negative Caster when everyone's reading 3 positive degrees. I am running slightly more rake than stock only because i upgraded the stock springs to General Springs HD Leafs. I have the AC 3" spring kit plus their HD shackles that should provide 1.5" of lift. all in, I bet i have 1-2" from the General Springs + 3" add a leafs + 1.5" shackles = 6 in the rear. I have the 3" upper A-arms and ball joint spacers but still cant get the truck to track straight. Its "darty" on the thruway and will not return to center after a turn. Both are characteristics of Caster issue. If the rear drops down some, it will add positive caster by bringing the top of the tire back or the top ball joint would fall back, right?

Is anyone running this much Rake and cant align the truck to drive straight? I have perfect Camber but terrible caster.
 
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