Dunno if this helps but I recently saw an enclosed trailer at Burgland with "wheel repair/straightening" plastered all over the sides. Also, the last time I called their parts dept and was put on hold part of the recorded message I had to endure was an advertisement for fixing/straightening aluminum wheels. Im guessing that the trailer I saw was a sub contractor who has the equipment to fix wheels mounted in it and does repair for dealers in the area as well as individuals.

Sad thing is I dont remember the number that was on the side of the trailer or the name of the company (ADD is a bitch) but I bet if you called burgland and did some checking they could tell you how to get in touch with the guy doing the repairs.