My 86 Hunter 31' came with Bomar hatches. The forward hatch has supports on each side. They consist of an angled arm bolted to the fixed hatch frame, and a rod that slides in the arm. The rod is bolted to the moveable hatch frame. The two arms are different angles. Starboard is a larger angle and works fine. The port arm has the sharper angle that catches the rod on its way down. Possible the PO changed the port arm and got the wrong one. Is there a source other than Bomar for used arms? The arms appear to be too brittle to bend.