First, the mysterious aft cabin shower sump. I have read all the other threads in regards to other carver models but none have mentioned the 4207. Can any owners chime in as to where it is located? The aft head is currently not working, but I doubt the two are related. The boat appears to have two fresh water hookups, port and starboard. I hooked up the starboard side and water poured into the engine room. Is there a shut off for the hookups? if so where is it located? All the plumbing is tucked behind the gas tank and difficult to get to. Other than those two items and the bad water heater, everything seems to work. Boat has been sitting uncovered for a year or two and needs some serious cleaning, new canvas and a cabin refresh. I love projects and am fortunate to own a custom bodyshop that can handle the complete job.