I always understood that alignment had to be last after corner balancing.
I recently got some hub stands and I was measuring alignment and was getting different readings than my last shop alignment too, turned out my floor wasn't as level as I thought and I think that may have been a factor. I think just a few tenths of a degree would make one side read more neg camber and one side less. Leveling to the floor might work if it was a perfectly flat spot.
I have new respect for folks that do diy alignments, I am trying to learn it myself.
