There I always wanted to say that......
Actually over the last week or so, my fuel petcock has been getting stiffer and stiffer to turn. I thought I would probably be up for a new one shortly until something in the back of my memory bank re-surfaced and I remembered reading somewhere that by spraying a stiff petcock with WD-40 you can make it move freely again. Well I tried it and it actually does It work. I just can't remember if I first read it here on Bonnevilleamerica or somewhere else but if your petcock is a little on the stiff side, try hitting with some WD40.