Here's the issue:
I recently decided to build up my first bike an did so from the ground up, using used but pretty new parts. I've ridden this bike for around 500 miles and was working perfectly with no issues. After a long ride, my front derailleur now does not stay in the big ring. Shifting it DOES move the derailleur as it should, but the shift doesn't hold it's place on the big ring. In other words, the little ratchetey thing within the shifter doesn't stay- derailleur slides back to the little ring position as if I immediately pushed on the thumb lever.
I disconnected the FD cable (thus releasing all tension) and the shifter does indeed ratchet up as it should and stay - both ways. Connecting it back (thus adding tension) and the ratchet system no longer works.
I have tried:
1) Cleaning the inside of shifter and regreasing. It's not dirty in the least. Same with the FD.
2) Redoing all the steps to setup the FD. It appears to be as it should be - again, it moves properly, the shift simply does not "hold" in the big ring. Which also makes it hard to be sure this is setup correctly - I can get it to go in the big ring, just not stay there.
3) Double checking the routing of the FD cable - it's as it should be.
Campagnolo Record 11 front (left Shifter) & Derailleur (Clamp on). Both are fairly new and in very good condition (at least upon visual inspection).
Any thoughts? I'd like to solve this without going to the shop - I'm trying to be self sufficient about fixing my bike so I can one day go on multi-day rides confident I can fix it if something goes wrong.