After using plow, tiller and FEL, tried using mid mower under tractor and cannot get it to go down. Have tried manually reinstalling to try gravity to help lower but failed. Knob to turn to adjust height now will not turn. If I remove the deck again and turn the knob, would it fix it or not. Do I turn it clock wise or counter clockwise to allow the hydrolic arm to drop to reinstall mower deck. Have read manual, tried YouTube videos, read this forum and others. Suprinsing no one has info on how to troubleshoot issue.