Looking for help. Recently purchased a classic, 96 ovation for my kids! Machine looks great and runs strong. Giving it a going over, and put a new belt on. Now it seems to squeal at idle, and wants to creep a little. Squealing seems to stop when underway, as soon as I hit the brake it starts again. Am I correct this indicates deflection issue? If so any suggestions how to back off the secondary on this model? Thanks in advance.