UPDATE: Sorry for highjacking this thread but here goes.
I can tell you that a stem nut from a Sprint does not work. It is an M22 hex style nut but has a 1.0 pitch (so I got one if anybody needs one
). I called the ebay dealer in Denver and after sufficient groveling and begging he finally agreed to sell me the 6 hole nut that was on the bike that the top clamp came from. I picked up a clutch cable as well. This happened today. So we'll see.