Is the tank a proper rectangle??? Same height, width, length??? If so, then your boat's dimensions may be off - Is one stringer (or another support) taller than the other??? Is the floor attached to the hull higher on one side than the other??? These boats were hand-made and minor variances like that could happen ( especially if Dan wasnt wearing a respirator

At a little over 7 lbs per gallon with a 20 gallon tank (approx 150 lbs full) that spans the boat (pt to stbd) 1/2" off probably doesnt make a big difference either full or empty. The liquid will level out automatically via gravity with slightly more fuel on one side than the other (maybe the weight of a small child). Considering the gear we put in these boats, typically on the stbd side behind the driver, passenger's weights, etc, it shouldnt have much bearing on how the boat behaves, handles, etc.. Knowing Dan, they probably did it on purpose to help counteract the weight of the driver or the gear

Having it securely fastened to the boat, properly grounded, etc, would be my main concern. Still, Ron or Dan would know best since they most likely built it... Give 'em grief about the gas tank being off-kilter just for kicks... LOL

joel