Campag 8 speed woes

clintsmoker had this issue when we were riding in france. he had to hold the lever over for the whole of the climb of the Mont Ventoux. big cajones that fella.

i am seeing him later so will check what he did to fix it when we got back to our hotel. wasn't anything too tricky. though it could be a case of same symptom different illness.

Thanks Jonny, I've run out of answers (hence post), would be good to have a new angle to attack.