I have a cub cadet zero turn lawn mower and the blades are having issues. When I mow the pto stays on until I put it in reverse it has a safety feature that turns the blades off which Is fine but when I try and go forward agian the blades have a hesitation before coming on, sometimes it takes 5 seconds other times it will take over a minute. Also someone told me they saw a bunch of sparks coming from the clutch is there any cheap fixes or do I need to replace the clutch?