When I bought the headliner for my 37 1 1/2 ton Chevy, information in the catalog indicated that it should be formed using water and ammonia. I have no idea what this process is all about. Can someone please enlighten me. The headliner is die cut and I assume that once it is shaped with the proper radius curves it will reasonably fit in place. I am concerned that it will crease if it is not softened prior to shaping. I would appreciate any help you can provide. Thanks, Ralph
