On my front hatch riser arm, the knob you turn to tighten the arm all of a sudden wont turn in either direction. It was working fine the last time we unscrewed it and let the hatch down. Yesterday we raised the hatch and the knob would not turn to tighten it. Any ideas on how these work? I could not see anything wrong with it.
Good question. Mine doing the same. Was going to just shoot some wd40 or something on them.