Hello! ive been teaching myself and i hate to ask for help, but ive run into a problem that i just cant find much info on to read. I have been working on 2 black bear rugs, and i have made a terrible mistake im trying to fix. i was able to tan them successfully, theyre nice and white on the hide side, and the heads are mounted. I think they came out pretty good considering! BUT...after i mounted the heads, i draped them over some lawn chairs to dry. i stretched them as they dried but tried not to touch the heads so i wouldnt mess them up. well now im at the stage where i need to attach the backing and finish them and they wont lay flat. i realize part of this is the trimming and sewing in the armpit area that i need to do, ive put slits there to help visualize the shape it will be in, but the middle of the back has a "pocket" or "bubble" where it conformed to the chair it was draped over. i just spent an hour on the floor tying to stretch and pull them back into shape after misting the skin to slighly rehydrate it. Im getting some stretch but the deformity is not flattening out. my knuckles are raw from pulling it as hard as i could. i tried standing on it and "pushing" the hide with a crow bar even. i just cant get it back in shape. ill admit im not very strong, but im stubborn and i need to get this fixed! does anyone have any advice other than "dont do bears yourself?" because i feel like if i had dried it flat, i would have been able to complete this without any trouble. sure it was a ton of work, but not as bad as what i thought it would have been from reading here. this could have happened to any hide i suppose, if it was dried over something like i did, and will never do again!! do i need to rehydrate this even further and dry it again? my only other idea is to nail the front shoulders to a frame, mist it down again, and hang weights at the bottom to pull the sides down and even out this "bubble" in the center. anyways, thanks for reading this and any ideas i might not have thought of yet would be greatly appreciated!