Have Jim Carter's Spanish Grain seat covers and installation kit for my '53 3100. I've cleaned up the springs, cut and replaced all the padding, but can't figure out how to stretch the seat cover material over the springs and padding (seems like way too much material) Any suggestions, tricks, websites that show how to do it? Is there some way to compress the spings before stretching the material? Or do I just give up and take it to an auto upholstery shop? Sure would appreciate any and all help.