I just purchased a really nice 67 RS Camaro that is in good shape. It has been running nicely. I am not sure of the year of the engine, but it is a Super Sport 350. When I first got it, the fan belt only squealed for a few seconds when it first started. Just recently, the belt has been squealing constantly whenever the gas pedal is depressed. The belts look like they are new and the tread is not worn. I looked at them and when the engine is running, the belts squeal and flutter side to side in one spot. They are not too loose on the pulleys. Any recommendations?