I am having a great winter with my new Sportsman 550 and plow. Today I plowed as usual and when I was just about finished, the plow would not go down and the winch is stuck. It wont budge. I cant remove the plow cause there is no slack. Any ideas on how to get things going again? The winch motor runs but I dont want to fool around with it since I dont want to do more harm than good. Thanks, folks.