the twist was not as bad as I thought. once I assembled the bottom half of the spitfire the twist came out almost completly. but some of the parts were fighting eachother at the firewall so when i glued them together i added a bit more wood to hold the joints more securely...I bieleve this will fix the problem. such a wierd thing to happen overnight. I think the temprature change may have effected the sheeting(my workshiop is not heated) but im not sure.