I was mowing weeds in very dusty conditions and the drive belt came off. I removed the blades, roto clutch, and shrouds and replaced the belt. I put it back together and the roto clutch now won't disengage. The blades spin all the time. I possibly put the clutch back together wrong(spring maybe upside down), but having problems finding a good video to watch. I have removed and replaced the clutch several times, including turning over the spring, with no change. The clutch cable seems fine and not too tight. Also, I'm having trouble finding the correct torque spec for the clutch hex nut. Thank you for any help or references.