I'm getting a lot of noise from my clutch. On the outside of the clutch is a slot that a bar sits in (brake?) The clutch moves back and forth hitting the bar making lots of noise, it rattles even when the blades are not engaged. I would think this would cause wear eventually. Is the clutch supposed to move like this? I know someone with the standard Raptor and the clutch doesn't move a bit. Is this common and if not is there a way to fix it? The mower only has 3 hours on it.