We are just starting to enjoy our new to us 2006 Islandia! I have one issue on the cover and need some assistance with a part number. The rear "tent pole" for the cover has a fitting on the floor of the boat to put the pole in, or I guess the appropriate term is should have a fitting for the pole to insert in. This is just in front of the rear seats near an access panel that has screws in it. Is there a part number for this fitting that goes in the hole? There is a larger hole as if a piece of rubber is missing. I have looked at every part diagram I can find and I am unable to locate it. Thank you for the help.