I got back to working on my truck. I purchased the 20 ton press from HF and removed the king pins. They were easy to get out because they looked new and appears to have been replaced without addressing the real issue. Unfortunately it’s as tclederman suspected.
3. Wallowed-out bushing-"seats" in the steering knuckles
(relatively common - difficult to repair, because replacement over-sized outer-diameter bushings are often hard to find/fit)
I took measurements and the OD of the pins and Od and ID of the bushings and they appeared new. The ID of the spindles were worn. The clearance was as follows:
Drivers: .003” on the top and .005” on the bottom.
Passengers: .002” on the top and .006” on the bottom.
It appears that I need oversized bushings and a reamer to match. Anybody know where I might find such bushings and reamer or any other suggestions I could do to fix the problem would be really appreciated.