Shortening an axle

[TJVigilante]

How hard is it? Sure you need to make sure the cut is straight, and the inner knuckle is straight, and the caster is right...but other than that, there shouldn't be too much issue, right? Measure, measure again, measure again, get 3 friends to measure, mark, measure, fix your mistake, mark again, remove inner C, cut off outside of the mark with sawzall and about 20 cheap blades, take grinder to the remainder to grind it flush against the mark, install inner C after checking caster angle 10 times with 5 different people, weld, paint, go.

Anything I'm missing here? Where does the axle bearing seat? Is that included in the inner knuckle, or the axle tube itself? Would I need to get the inside of the tube machined for the bearing seat surface?