I can't remember any one problem building the G17 but sometimes you can't see were you went wrong but with your best strips on each side of the forms, your eye and tape, I would make it fair. In the old style of building before CAD, boats and planes were lofted full size by wood battens by eye to fix bad spots. Fair is right, kayaks are so long and thin in the water if you keep it fair and straight it is hard to go wrong. Don