I wouldn't trust a dealer tech as far as I could throw him to do a gear setup. I worked for a year as a Toyota tech and didn't see one single carrier removed from a housing. I was young and inexperienced so I got oil changes, tires, alignments, suspension, brakes, interior type work. The experienced guys got stuff like head gaskets and heater cores and diagnosis/troubleshooting (it was shocking how many times we'd get "the engine sounds different/check engine light is on" and hadn't had an oil change in 25k miles).
Not one R&P.
I know a Jeep dealer probably gets a few more, but do I want a vasectomy from the guy that's done 11,000 of them or the guy that does a couple each year?