Hate to say it, but someone a few years ago had problems with a tank put in backwards like that. I'd pull it to turn it around and relocate the filler. While you're in there you can address the foam/drainage situation. Really not to hard considering all the other work you've done/are doing.
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1985 Wellcraft V-20, Evinrude ETEC 150: SOLD
1979 Marine Trader 44, twin Ford Lehman 120s
2006 Panga 14, Tohatsu 20
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