BobP, youve done everything you possibly could to help this guy except do it for him....
devcon 30 does not completely set in 30 minutes. its temp specific just like anything else.. if its cold there.. it will still sag without a turner.. and if you dont use gloves when handling your lure, the devcon will fisheye and if you dont heat set the paint it could wrinkle the paint.
so many variables and what ifs