Noisy Drivetrain - chainring worn?
My drivetrain is 11sp Ultegra di2 with a Quarq crank/Dura Ace 9100 chainrings. The chainrings have less than 5k miles on them (chain replaced often), so I find it hard to believe that it is toast, but I can't think of anything else that could be causing the noise. The lowdown:
- I just moved my groupset over to a new frame (R5), but the noise was on the other frame (R5) as well
- Only noisy in the big ring, and on some gears in the back (basically every other gear). Noise is louder on the smaller end of the cassette
- Chain measures as new
- Tried multiple cassettes
- Adjusted the FD/RD/micro trim/jockey wheels/etc. nothing helps (I'm confident in my setup abilities)
- I first noticed it after waxing my chain and figured that that was the culprit. But I have since gone back to Silca Synergetic (thoroughly stripped/clean chain) and the noise is still there
Any other ideas as to the cause of the noise? Given the price of DA chainrings, I don't want to spend the cash on a new one if it is not the issue.