i should imagine you would need a wheel straightener before a wheel refurb service, in my experience the painters dont get buckles out of the wheels?
regards
Thoroughly recommend Lepsons. Used them recently to refurb my Porsche GT3 wheels. It wasn't a simple refurb as I wanted black with a thin silver lip to match the car.
Wheels came out perfectly! And will be using them again soon for the wheels on my daily drive.