Have hit an unexpected hurdle with the Campag back to zero shifters. Playing around with them prior to install I have managed to unsynchronise the ratchets. Total DOH moment 
This is what they look like right now
So a heads up for anyone planning to install these! Do not mess around with the ratchet until you have them cabled up!
Awaiting delivery of heavy-duty monkey wrench which the nice man from Campag reckons is an essential item to get them back to pre-install settings.

This is what they look like right now
So a heads up for anyone planning to install these! Do not mess around with the ratchet until you have them cabled up!
Awaiting delivery of heavy-duty monkey wrench which the nice man from Campag reckons is an essential item to get them back to pre-install settings.