Yeah.. I have another bike with a threaded headset that I might swap over to use the 600 stem I have. For me, however, putting the other headset on still won't allow me to go higher with the 600 quill I have without sacrificing aesthetics. On my other steel road frame, there is actually a spacer in the threaded headset about 5/8" high. I doubt that will be able to fit on this cannondale fork.

I will go back to the shop and see if they have that giant lock nut. Otherwise out with the new and in with the old. I'll be without my geared road bike for a while unless i swap everything else over as well (this is supposed to be a FG/SS).

I would like pictures if you're still willing to post, Burton.