Hi. I installed on my bike etap myself a few months ago. The instructions were very clear and I was impressed at how well it worked from the first ride, especially the front derailleur. I agree with the previous comments (including considering a different mechanic) but on my ride yesterday I came up with a couple other ideas:

- Doublecheck the vertical FD adjustment. On my bike I couldn't get it low enough (compact 50/34). Didn't ride it until I carefully did some filing on the FD hanger to get it to spec but it seems to me that if the FD is too high it could cause your problem.

- Doublecheck your chain length. Your chain almost certainly needed to be shortened to meet spec. Maybe that was overlooked? Seems like that could contribute to your problem as well if chain tension is too low. Also check RD adjustments.

Good luck,

Eric