might. I've seen combos like that work okay. The original (c-record?) derailleur was more than likely swapped out because it wouldn't work with the shimano shifters (maybe not, though...the guy just might have assumed...).

The C-Record derailleur was a remake of all of the campy derailleurs up to that time, massively restyled. No slant parallogram. If you go up into the '90s you'll find a nice athena or so, works just like the shimano that's on'er now.

Put your serial number up...there are people here interested in that detail.

And, oh yeah, we need to see some pictures.