One problem with the boat that I chased for quite some time: I had a strong diesel odor (mostly in the aft stateroom) and some fuel in the bilge every time I filled up - and for several days afterwards. Looked pretty much everywhere. I finally traced the fuel leakage to somewhere aft - so the main tank. But no signs of leakage anywhere around the tank (that I could get to.) I knew the leak had to be up high on the tank since it went away after running the boat on the main tank for two or three hours. I could get to all the fuel supply and return hoses and they all looked good - no leaks. Eventually found a hole where the vent hose was rubbing against a screw high up near the fuel fill. I figured that might be a source of the smell - but no way was that the source of all the leakage in the bilge. Sure enough, next time I fueled the main tank, I got the same smell. But this time, it didn't show up until several hours later.
Stands to reason that the fill hose might be involved, but I pulled all the inner boards out of the hanging locker and also the access hatches near the fill and under the mattress. Hose was completely dry everywhere I could reach and feel. I mean, the only section of hose I didn't try to see was the 12 inches or so inside the port side night stand. Yep. That's where the leak was. I finally pulled the drawer out of the nightstand (ridiculous I didn't do it earlier) and the hose was badly kinked where it came through the poorly cut hole in the bulkhead between the bed and night stand. This kink eventually caused the hose to fail in that spot and, because of the kink there was a low "belly" in the hose there. Even after running the fuel down below the tank fill inlet, at least a half-gallon of fuel remained in the hose, drip, drip, dripping into the bilge. Removed the old hose, re-cut the hole, installed a new hose. Problem solved.
Just wanted to let you know to watch out for things like that. These are pretty well-built boats, but some things were done just a bit slipshod...