I purchased some pop-up cleats and my fiberglass is too thin for them to work. Attwood has a different set of backing plates that takes up the gaps.... I need 6 of each of the following part numbers and NOBODY has them and Attwood won't respond to me. I've tried 7-8 online places and all 3 local marine part shops. Help! I've got 6 holes in my boat and nothing to plug them up with!