if beneteau is telling you to put a plate between the comp post a nd floor it seems to me there is a design or cons. prob. at this point or the boat in gen. i would tell ben. to fix it so they are responsible for future prob. but you know they won't. sounds to me they know this is prob. and are giving a quick rem. i would steer away from this boat. that is your right even if you signed a purchase and sales agreement. if the floor is giving that much because of rig tension what will it do in a seaway under adverse conditions. only a quest for thought.