Most of us have seen post war Lionel F3 shells that warp giving them a hump back look. Has anyone been successful at straightening out humped shells? I have some I would like to keep if I can straighten them out. I thought about a heat gun and some forms to press it back in shape, then I thought about turning a shell into a puddle of plastic and stopped. 😜😜
Any ideas or is the best way to just replace them?