In reference to Tom Baldwin's post about SK-1 mods: I do not know of any specifically but would like to learn. I own a SK-5 and figure they are roughly the same toy. Reed Ghazala modified his SK-1 about 30 different ways. This is a link to the article describing the mutation of his SK-1. Check it out: http://windworld.com/emi/ghazala.htm pajama1 at mindspring.com