I heard before that a glass body will continue to expand and move until it reaches the max temp it can reach, the reason some manufacturers recommend not painting them black or pulling the body in the direct sun before painting, once it expands or moves it doesn't go back unless heated beyond that temp again. I asked my buddy that built bodies this and he said if tooling resin (isophthalic polyester resin) is used its not an issue and he had painted numerous bodies black with no problems, however it didn't stop me from pulling my blocked gel coat body into the hottest summer sun and giving it a bake, hanging a 'glass bodies from the rafters in a hot building results in the same thing 'Tech mentioned, get it on a frame is the solution, with the fenders mounted if possible until "the cure", I would think after that you would be fine. Best of luck Matthyj