I think I recall that Dura Ace from the early '90s was a different spacing from other shimano groupsets and therefore was not compatible, you could not upgrade little by little.
This is a shame because that is exactly what I want to do now, and as my wheels have Campagnolo Athena Hubs with a shimano spaced screw on maillard block is my recollection is true then I am stuck.
Anyone got any clues?
Somerset, like 'Heartbeat' with newer cars!
Retro MTB: 1992 Cannondale 3.0 Deore XT M730. 1992 Marin Pine Mountain Deore DX M650.
Retro road: 1992 Eddy Merckx Corsa Extra Telekom Shimano 600 STI. 1993 Dyna Tech Ti.
Modern: 2006 Wilier scandium Ultegra 6600. 2014 Wilier GTR Ultegra 6800.