I bought a used Turf Tracer HP with a 52 inch deck a few weeks ago. When I engage the blades, it makes a squeeling or screeching sound. Is this normal for it to do this? It is a manual blade engagement. Does it just make this sound because it is the belt grabing on the pulley? I appreciate any feedback. Thanks. I posted this in the exmark thread, but didn't get any replys.