Thanks, Peter G for the detailed description and photos. Will check this weekend for those drain holes on port and starboard. My floor seems to be drying out now that the a/c is draining. Thanks.Hi BigStick - From when I purchased our 480DB the carpets (and Port side internal panels) were water damaged. I found the blocked AC drain as others have mentioned; and also found that water was coming down through the 'inside cavity' where the 'hard top' joins the 'cabin' in the sedan bridge. This was due to the 'drain hole' being blocked by a piece of candy wrapped (I assume was a token of generosity - left by one of the assembly workers at the factory). The 'drain hole' is located outside, above the rear of the side window, directly below the Four Eighty badge on the join between the 'Top Section' or 'Sedan Bridge floor' and 'Lower Section' or 'Saloon Sidewalls' (there is a drain hole on both port and starboard sides). 'Drain holes' are only visible when looking up, underneath the 'Top Section'. Carpets were wet after rough ride/port side, heavy rains or wash down. External water enters 'inside' the cavity via deteriorated sealant/caulking around the sedan bridge (note: the inside edge of the joint - behind removable panel in sedan bridge had no sealant/caulking allowing external water to freely enter cavity). Due to blocked drain hole, water accumulates within the cavity and then flows down through the glad/opening and a compromised seal around DB AC drain hose, behind panels to 'saloon floor' near the Saloon AC, then flows under the cabinetry and carpet.
I only discovered the blocked drain hole(s) when I was investigating water damage and removed/replace Port side internal panels (see photos below).
Unfortunately, bad design means that these drain holes direct water to the vulnerable 'radius' area of the side window and creates havoc with the window seal and vinyl cover.