Thanks for the graph,
when in the small chain ring, my sweet spot is on the 13T , but I noticed the chain is rubbing on the front derailleur, thus making a sound, so I go to the easier 14T , and no sound,
when in the big chain ring, my sweet spot is on the 20T, but there is sound, so I go to the harder 18T, and the sound stops.
Will adjusting the front derailleur let me get into my sweet spot with no noise?
Shimano 105 11 speed drive train, Front derailleur is Shimano FD 5801