Man this is getting old. After new ball jouints, ujoints,DT bar, dss, thuren steering with heim joints (these three are great), bushings, eccentric bolts, tires, rims, two steering boxes, two alignments, probably more but can't remember the truck still drives terrible. I know it's a truck but it is real bad. This thing will not return to center and is all over the road (no death wobble just very tough to controll. I noticed steering gear #2 which is only 4 weeks old is leaking from the over center adjustment. I have the caster cranked up, could this put strain on the pump and cause a leak? I don't know what to do next. I seem to be just throwing money away at this pint. I am in south east MA if anyone knows of a decent shop that could help. 
