I thought I would share what I did to get the most caster I could get with the trunnions.
I pressed the rear upper control arm bushing out a little to move the arm back as far as it would go. I pressed the lower front arm bushing out a little to move the arms forward. I used 12mm washers from Ace Hardware to further shim the lower arm forward The 12mm washers fit better/tighter than standard non AN 1/2" washers and have a smaller OD. I made two 1/8" shims for the upper ball joint for easier and quicker small adjustment. Now the lower control arm has an extra 1/2" or so gap that has to be filled. Ace sells stops that are basically thick washers, 1/4", 3/8" etc. On the shocks I use the 12mm washers and on the Trunnion I used, a few AN washers against the control arms and regular mixed in for thickness shimming. Against the back of the trunnion There is a larger washer to keep it from pushing back. When tightening the trunnion, I removed the ubj bolts and pushed it back as I tightened so when it was done it sat centered in the uca without binding.
I originally had about 3.3 degrees caster. I just re did it to get all I could and ended up with 4.4 degrees on both sides.
