I understand the frustration you go through when a piece doesn't fit..but you have decent pep skills. You could try to just make the helmet and sell it to someone to make a few bucks. I mean you went through all that work to actually finish the file and then you just rip it up? Why not try and make something out of it, or like m00sem4n said, try out some resining techniques. I always save pieces so I can try different painting techniques on them. It helps to have a few trial runs before the final product. No sense wasting all that time and effort.