Grrrrr,. Walked by my 22' SeaSwirl (on a trailer) and smelled gas. Now that's not totally suspicious but it didn't take more than a second to notice the blackened path under the bilge drain. After an hour of crawling around the I/O 305 SBC I ruled out carb, hoses, filter/trap, pump, fittings, and came to the ominous conclusion; something's not right with the aluminum 42 gallon under floor tank. Siphoned the 42 gallons out through a 3/8 hose over last two days (that takes some time) and filled up everything in sight (lawn tractor, 9N tractor, pressure washer, etc). Likely a cracked weld seam as the last time we went out, hit some waves hard. Just to get at the tank to drain meant pulling seats, deck plate, top fittings to tank. What a PITA. It's a custom tapered tank too Oh well...filling that floating hull with $$$.