If they have to shim it then the BJ flip was probably too much for it. Camber adjustments on Isuzus is backwards from most other vehicles. Adding shims brings the top of the tire in. On the 3 Rodeos I've done lifts on, none have had to have the BJ flipped to get it into proper alignment. Its mostly older short control arm Isuzus that need it.

When I replaced the upper control arms on my Rodeo I had to take the torch to one bolt and heat it pretty good. Nothing would budge it before that.