That looks like a product of winter storage with low fuel level. The condensation in the fuel tank leads to all manner of nastiness. If it were my project I'd probably figure a way to use some Caswell tank sealer to prevent future problems.
That looks like a product of winter storage with low fuel level. The condensation in the fuel tank leads to all manner of nastiness. If it were my project I'd probably figure a way to use some Caswell tank sealer to prevent future problems.