I have a 5 years old Bianchi with full Ultegra components, STI, triple in front and 9 in the rear.
Just got a bad news from LBS today, I need to have the BB, front crank and rear cassette and chain replaced because they are worn out. Do I have to replace the FD and RD as well if I want to go with double in front and 10 in rear? LBS said I can not. I was thinking of going with a double or compact crank set sinceI don't use the smallest chainring anyway (also reducing some weight), and also the new FSA double is costing less than what I was quoted for the replacement of the front Ultegra triple.