At first when i was tryin to crank it the tires would spin and everyone told me it was the clutch bell on the motor so i took it off and cleaned it and seemed to wrk pretty good. I ran it for a while and now the tires wont spin at all even when its running the tires wnt engage the clutch bell and sput gear are turning so is it the slipper clutch now or what yall think I'm new to all this so any help will be greatly appreciated