I have an island 3601 winch and only pulls about half it’s capability before it slips,i replaced the full face clutch, cleaned both metal faces that the clutch contacts, adjusted the handle to about an inch of play before the clutch grabs, the 2 surfaces that the clutch contacts are as smooth as a baby’s bottom and the clutch is pretty smooth as well, could this be my problem, I don’t have another winch to look at to compare, any thoughts, suggestions would be great, thanks