Rich,
Welcome back..sorry it's on a sour note. Your post is interesting to me because I thought I knew how this was suppose to work. I was even allowed to put a few side notes on the Tech Tip page regarding king pins.
If you have read the Tech Tip on this, it mentions that everything up to 1 1/2 ton is the "push in" floating type.
I thought other folks who had done the smaller trucks, such as yours, have indicated the bushing pushes into the spindle with moderate palm pressure, and the pin, also installs into these bushings with a hand push fit...everything floats.
I wonder why yours is different? If you have pressed the bushings in, and they are tight, so be it..it's OK. This is how many rigs work.
The proper next step would be to take the spindles to a automotive machine shop where they will "fit" the pins to the bushings for a nice sliding fit. This whole scenario is how you would address it on a big rig anyway..maybe you ended up with a king pin set from a larger truck..I don't know if they would interchange.
All is still good in king pin land, it's just a different song to dance to.
Stuart