Voila, after another 18months of piecing it together I now have it as I want it
The more I looked at it, the more I liked the new success kit, so I kept hunting and hunting for good condition ergos with original sachs branded hoods and the sachs modolo brakes. Finally I found both, but only available as part of a full groupset with Wolber wheels. After 48hrs of anxiety i'd sold enough from my parts bin to do it - bonus is my tt rig is now sporting a lovely new success transmission.
I'm not totally sure about the Shamals - I loved these at the time, but at 80+kg I feel more secure on regular spoked wheels.
I've had the Shamal rebuilt onto a 32hole new success hub - the original campag hub was damaged several years ago so I didn't feel like a complete butcher
Apologies for the modern pedals - having reluctantly made the shift from Arc to Keo six years ago i'm not keen on going back the way!
F&F E Merckx Corsa Extra
F&R mech: Sachs New Success
Crankset: Sachs New Success
Brakes: Sachs New Success
Ergos: Sachs New Success
Seatpin: Campagnolo Daytona
Saddle: Flite Ti
Stem: Cinelli Oyster pantographed
Bar: Cinelli Eubious (scratched, but original from my junior 1995 race bike)
Wheels: Campagnolo Shamal / Sachs New Success - Wolber TSX
1994 Carrera Podium, 1970 Fairbairn 531, 2002 Fondriest Megachrome