: Hi Charles.
: If you fibreglass only one side you are looking for trouble methinks. If I
: were you I would heat the fibreglassed side and when hot force it back to
: the right shape. Then I would fibreglass the other side. Then the forces
: in the lid would be more balanced and the warping should stop.
: JohnK

I forgot to state that I did fiberglass both sides. I fiberglassed the outside when I did the entire deck and then I did the bottom when I cut out the hatch lid. I think it warped when I did the bottom and need to know how to force it back.

Charles Robinson