I'm in Longmont, but I almost never drive my Trooper now that I have my Prius...
Anyway, I still frequent Gebhardt for no other reason than I have in the past.
No matter where you get an alignment, always get a four wheel alignment, and get the angles before and after on a printout.
Not much is adjustable on the rear, (maybe thrust angle) but it's important to know if one of the rear angles is messed up.
Nate