PDX-S.
I would not really worry about shim or no shim under the front kingpin. Screw the kingpin in all the way to a snug fit (don't over tight). Then measure to make sure they are the same size. Next Run without shim and then run with shim. See which one feels best to you.
Grab a baseline setup and then try different things like shims, preload, ride height and differ springs. Every car will have a slight different characteristic so don't stick with just what works for that person.
Good luck