I haven't done a knuckle conversion yet, but if/when I do I will be using the tool to recenter the knuckles (since I now own it, but have it loaned out right now). But in your case it'd be easier to use the current shims like you said. My inner axle seals lasted about two years before they started leaking, and that was with a lot of wheeling, standard seals, and 0.012+ off to one side. I think you will be good for a few years.
Just pound the races in with a lead shot rubber mallet, using the tip Wes gave. With the studs you can tighten the lug nuts and it will suck the studs into place.
Rising Sun Bio
2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering,
no more Sanden OBA
1FZ-FE factory lockers +
Safari intercooled turbo, CDL switch, cup holder, Metric TLC leather, heated seats, JDM switches, PUMA OBA.
Warn M12000 waiting for a bumper.
Limited TRD 2UZ-FE SOLD