I took mine to a machine shop and for $50 the reamed and wet honed the kingpin bushings to the exact size needed. But I wanted to make sure it was done right and tight and I've never done it before.....So........

Only one shim? That's pretty amazing. Mine took three on either side. You can see them in the the (before) pictures. I think (at least mine did) the kit comes with 6 shims. If not all the resto parts shops carry extras.