Uh, I'll cast another vote for Justin.
Trust me, we've done plenty of "head-scratcher" jobs for small-town and/or rural truckstop shops. They do okay on the handful of 40-channel models that they know by heart. Didn't get many of that kind of radio from them. But when they showed up with car full of radios, it would always be the exotic, or seldom-seen models that had stumped them.
Oh, and Galaxy mobiles with loose on-the-side mike sockets. But that's a whole 'nother story.
You have a radio which is "exotic" by small-town and/or truck-stop-CB-shop standards. Only a minority of that kind of outfit has someone on hand who is either: A) familiar with an exotic design, or B) equipped to figure one out even if it's not terribly familiar.
Justin qualifies for A and B, both.
I oughta know.
73