[C320-list] Mast Top Shroud Exit

[P & B Sheerin]

My Seldon mast has two top shroud exits, (port and starboard) just below the masthead. It appears rainwater maybe ingressing through these holes with severe winds, ending up in my bilge. The slots either side of the mast are not covered with exit plates to protect water entry, like the halyard exits. Does anyone know if there are a rubber grommet or similar for these exits on the mast. Any help would be grateful.
Peter "Jaraman" # 1096