1971 Imperial Coupe. The really bright, careful and super-mechanic previous owner/mechanic apparently ignored the proper way to jack up a unibody Imperial and placed the floor jack under the rear floor pans. On both sides. More than once, I believe. The result is footwells in the back raised 2 to 2 1/2 or so inches from flat. I'm a little surprised they are only raised that much..... Has anyone encountered this and repaired it successfully? I'm thinking BFH and some serious whacking, or ????? I think I've eliminated heating the pans with a rosebud, but I'll listen to experience.