threre are plunty of shops that are in the area that will work on a/c. i just think if the place is only a/c then they know what they are doing because they are specialized in that field. sorry if i spell things wrong. but like i said. if your car is vibrating down the road have your tires check for balance. i mean you dont have to go directly to a camaro or vette shop to get the work done. i know that you said that you dont want to take your car to anyone but anyone still does the work they have on the sign. just a thought though