So I think I'm going to build up an older SystemSix to race next year, and to give me something to do over the winter. Plan now is to modify for internal electronic. I ride campy mechanical otherwise.

Original thought is to use 6870 so I can use my 11 speed wheels, however I really prefer campy ergonomics so not sure if its worth considering EPS v2. Have any of you set up, maintained, or raced EPS and what were your experiences?

Drilling the charge port is not a major concern as I'll have to modify the frame either way, but if you had reliability problems or inconsistencies with performance then this would defeat the whole purpose of going electronic.