I'm having an issue I've never run into before and was wondering if other members had either encountered it or could suggest an alternative...

The Campagnolo Frankenstein headset that came on the bike when I bought it used never fit properly or felt securely fastened. I was told by the seller that he had cobbled together a headset from various campy parts and just assumed that he did it poorly and used parts that didn't fit one another correctly. I purchased a fantastic condition c-record headset for the bike (thanks Cyclotoine!), but found that it doesn't fit at all. The old lock nut was apparently only on by a half thread and the c-record won't even get a half thread with no washers. I took it to a shop and was told the stack height was wrong for campy headsets and my only option was to grind the frame's head tube down if I wanted to use a campy headset. Naturally this was not an appealing option.

The bike is getting a Tange headset that will fit it, but I'd really like to use a Campagnolo headset to match the rest of the parts group. It seems wrong to have a $14 tange headset on a De Rosa somehow.

Can anyone suggest any alternatives to using the tange headset? Were any of the Campagnolo ones made with different stack heights? The only alternative I've been able to find is a Chris King, which is both pricey and not ideal.