i was stuck on top of this soft dirt mound and my rig was tipping over so i had to back up after digging out the left side of my rig...anywho there was a pretty big load beening stuck and at such a bad angle i had to let the clutch slip in 4wheel low and heard a squeal while letting the clucth slip. is that normal i dont think ive ever heard it before but maybe once or twice before..is it a sign of clutch wear???