I noticed that the teak on the swim platform of my 2004 Beneteau 331 is beginning to lift from the fiberglass on one side. I notified my dealer and the first question that he asked is whether I shrink wrapped the boat for the winter. I used a custom cover that I ordered from the Canvas Store rather than shrink wrap, but it didn't cover the swim platform. Is it normal for something like that to happen if it is not covered for the winter? It seems logical to me, that on a boat, something like the swim platform should be pretty much weather proof. I don't want to be unreasonable so I would appreciate any info that this group can provide before I prepare for a warranty battle. Also, it would be good to know whether I should be covering it for next winter.Thanks