On closer inspection the bolt into the crank arm is gone and the one that fell off has been cross threaded when installed.
Only 3 bolts holding the inner ring on.
I havent touched these since the bike was built by a very reputable shop, and i had a Stronglight 36t ring installed on the compact crank.
Rang the LBS who is the Campy distributor for Australia and they tell me to bring it in to determine which bolts i need. 2010 cranks.
Dont sell single bolts, only sets.
Price= $130!!!!!!!!!!!!!!!
For 5 bolts!
Surely this a record for the most expensive bolts ever or are they this expensive everywhere?
Luckily i had a 10 speed crank i could pinch the bolts from.
Going to buy some KCNC ones off evilbay for $18 shipped.
