Hello friends. Having an issue and desperately need some information. I went to pick up my 2005 CTS V yesterday from the shop. The mechanic installed my longtube kooks headers and Monster stage 2 clutch with the upgraded 18 lb flywheel with bullet release. Pedal felt good and exhaust sounded awesome. Realized after a few minutes that the ac wasn't working. The mechanic said the ac belt jumped off and they put it back on and it jumped off again. I was looking for advice for this issue. Could it be the 18 lb flywheel throwing off the harmonic balancer or a bad install ? Mechanic said I didn't drive it before I worked on it. I was like really. 91k and I've been driving this car for over 4 years almost every day since it had 40k on the clock. I didn't accept delivery of the car after 10 minutes of arguing. Driving the owners truck now. Any thoughts ? Thanks in advance.