While cutting grass the throttle handle got warm on my trimmer so set it aside to cool. When I tried to go again the cable seemed to be frozen up. I had to order a new top boom as the nylon spacer had gotten so hot it melted. I put new one on and now it acts like the cable is not engaging somewhere. It just barely spins the string. I don't have 10 hours on the unit. Has the clutch been damaged or whats going on?