I just assembled a 2012 Specialized Shiv TT. The bike comes as a "module" with the crankset, brakes, aero bars, etc. I added 2008 Campagnolo Record-10 derailleurs and 2012 Campagnolo Record-10 Bar End Controls (back-to-zero position). I am not a professional mechanic but I have been doing all of my own work for over 40 years (unless there is a task that requires a tool that I don't own, such as pressing bearings into PF30 bottom brackets). However, this problem has me stumped.
It seems like there is a chain line problem. When I have the bike shifted on the small chainring (39T), I can't shift the rear derailleur past the 7th cog (counting largest to smallest) without having the chain rub on the large chainring. Actually, in the 7th cog there is just a hint of rub on the large chainring.
I double-checked how I installed the crankset and I think I did it correctly. There is no lateral play in crank.
For reference, I am using Record-10 cassettes on a Zipp 900 wheel.
I've only experienced something like this back when I was using Record-8. I would get this kind of chain rub on the large chainring on the 7th cog (of 8) on one of my bikes. Fixed that problem by adding a thin spacer between the fixed cup and frame and that worked. Obviously, you can't do anything like that with BB30.
Any thoughts? TIA for any help you can provide. I might take the bike in to the local Specialized superstore.