also just a thought on levers.
is there any performance gains to be got through using the mafac levers? the bike is currently running modern tectro aero drops designed for duel pivot side pulls. i have a set of old drilled mafac levers but the hoods dont look to be as comfortable as the tectros so i wouldnt want to swap them out unless i could get a significant gain. cant see much differance in pivot position but its hard to measure accurately.