Hot tub plumbing

The flexible PVC over time has some expansion. Pros fix it by cutting it back to good surface. This is going to sound crazy but how they do it.
Most jet and jet bodies are obsolete, or have to be ordered. Even when new are avaliable changes have been made. IE switch in appearance.
They want to charge a service call. Charge by the hour after the arrival, so fix it in the same call and get paid.
Believe it or not they after cut back carefully peal the old PVC out the jet body. Then lightly sand it. Prime and Re-Glue it with what is called Hot Pool PVC Cement.
Small Spade screwdriver slowly work as around until all PVC pipe is Pealed Out.
Yes I have done it. At least 50 times.