Power Meters / Powermeters (SRM, Powertap, Quarq, Ergomo, Vector, Stages, power2max, P2M, 4iii, InPower, Cinch)

This is your mate with the BMC and crappy cable runs? Sounds like he needs a normal frame with outoboard cable runs, a powertap and some mechanical dura ace

The shifting is fine now With Di2. We both suspect a worn lever working with a less than idea cable run.