CB shops get mixed reviews like 222 Papa Bear, some love him, some hate him. The trouble is they're hacks who THINK they know radio like some CBers always have but all they do is make them jump through hoops they were never intended to do. Sometimes they get lucky, sometimes they don't which leads to those mixed reviews.
The days of knowledgeable techs are long gone, once upon a time they held FCC licenses certifying their proficiency and could be trusted like Caruso Electronics where I took my rig. Tom was not only a ham but held a 2nd Class Radiotelephone license (1st and 2nd now grandfathered into GROL) which legally still is required to service CBs. To protect his licenses he always checked transmitters for meeting legal specs before releasing them to customers same as I did when working under the supervision of a P2. Unfortunately trying to find a licensed tech these days is like trying to find a needle in a haystack without a magnet.
Well, if that "real" tech holds a GROL don't take that modified rig to him, he'll remove the mod. Now if on the other hand doesn't but actually knows something he's the one who can find that extra frequency range with ease, likely he has a dummy load and frequency counter. He might even re-tune the rig to make sure it works properly over the entire frequency range if you treat him nice, a bottle of his favorite joy juice helps.
BTW Reading used to be one of my stomping grounds back in my CB daze, I joined the locals "up top" in the parking lot on Mount Penn that doubled as lovers lane in the back seat with Dorian, a local YL. (;->) Funny how the 222 shop is nowhere near Reading but much closer to Fleetwood between Temple and Kutztown along Allentown Pike also known as PA 222. Funny how that was my escape route when a Night On Storm Mountain went horribly wrong, as they came up Duryea Drive from City Park I was going down the back road into Pennside...