Thank you for the information. I don't know if either of my current front derailleurs would work properly/smoothly with a 20T differential plus I would have to recrank to take the smaller rings. I am considering a 48/32 setup to keep the ratios on the front rings in spec and shifting smooth, as I age having the gears makes all the difference. I have played with chain lengths on my setup, any longer and chain will rub rear cage/jocky wheel in the most relaxed position, any shorter and big big will not work. Have played with 'b' stop setttings. I have a dag tool, hanging it right always helps. My only rides are road bikes I build, no dirt, no gravel, just road. Anything I comment on is coming from that 2 x 10 experience only, so it may not crossreference to different setups/uses, my bad.

The bike stand is the messenger/bible when doing dress rehearsals my best advise.