This project is becoming less of a restoration and more of a "rescue what I can" job.
Not only was the taper on the non drive-side crank knackered but both cranks were noticeably worn by what looked like prolonged rubbing from toe straps. Being extremely risk averse and wanting a bike that could be confidently ridden without fear of things snapping I decided to let the cranks go along with the T.A. adapter and the "little" 50T inner chainring. The big 55T outer ring was severely corroded so that's also useless. Luckily I have some T.A. cranks with more sensible 50/40 chainrings that will suit the bike.
Having already taken the advice given on here regarding the G.B. bars I'm not left with much of the original bike! It came to me with a really varied selection of bits and pieces of all ages so at least I don't feel obliged to get everything replaced with stuff from one particular year or groupset. Anything from 1960 to 1973 (frame date) is kosher for this build. Here's what's left:
Frame and forks - either going for full professional respray or rattle-can rear triangle with touch-ups elsewhere
Unknown headset - it'll do for now
Rear wheel - needs full rebuild with new spokes
Mafac centre-pulls and levers - need new lever hoods, straddle cables and brake pads
Campag Record front mech
Campag Gran sport rear mech - minus one pulley
Milremo stem
Brooks saddle - just needs a bit of softening
Seatpin - plain alloy
Chater Lea pedals - slightly bent cages but perfectly usable
Stronglight bottom bracket cups with mystery axle
Everything else was either rusted, corroded or chewed beyond hope. Certainly not a bargain find and it will never be worth the money I'll have to put into it but hopefully it will be a nice bike by the time I've finished.
Mark.