I am converting a 1974 FJ40 over to the disc brake axles from a 1978 FJ55. I stripped down the 78 axle, removed all parts, repainted and cleaned things up etc. One big problem - the shim configuration was lost due to my mistake. I was matching shims to the 1974 pumpkin which I am keeping(the 78 is thrashed) I thought I could copy the shims in the birfield on the 1974 (not the 1978) due to the fact that I thought the shims were a function of the vehicle, caster, camber, and toe etc. argghh!! Should I just put it back together and hope for the best? I have a factory manual and I haven't found any area that mentions how to place shims when doing a rebuild. Where can I get a fish scale? I bought every other tool but never saw this one mentioned before on the pages for a front axle rebuild. I have all new bearings, races, and seals all ready to go back in but I've got to get some expert opinions first..... Thanks in advance for the advice.