I have a 1985 Hunter 40. The original owner replaced the aft holding tank with a s/s tank located in a new spot (port side under the seating). I have no idea why - but I'm betting there was trouble with the original tank. Problem is: he just capped off the old connections and left the tank. That area has now deteriorated to the point that its damaged the flooring. Basically - that area seems to "hold" a thin layer of water just on top of the old tank and does not drain to bilge. I need to get that old tank out - or at least get it opened enough to install a drain to bilge and clean the area. Has anybody got (hopefully) a picture of the tank in mid-repair?? I'd like to get a clear idea where (and how) I can safely cut into the tank cover without damage to the main structural trusses in the area.