My wife’s Emonda SL5 has been making all kinds of drivetrain noise and experiencing poor shifting for quite awhile. I tried re-indexing it, resetting limits etc to no avail, I’m a newbie at this stuff but somewhat competent. We had velofix come out and give it a full tune up (amazing service btw) and repaired a severely bent front derailleur hangar and gave it a full tune up. The velofix guy said that the derailleur was so misaligned it was like she was severely cross chaining all of the time due to all of the friction and un-optimal chainline…
He noticed her 4iii left side crank power meter and said he wouldn’t be surprised if she immediately gained some watts due to the drivetrain issues.
Her coach had her do a tempo test on the weekend and based on that he said he could problably bump her ftp up to 235 or 240 from 230.
Could a 10 watt increase be at all drivetrain related?