Steve thanks for adding. My knowledge is limited to my Ultegra 6870 50x34, 11x32. In manual on the original frame I could get all my gears, but after moving it all to a new frame I would get slight rubbing when in big ring/big cog. That is what prompted me to start the original thread. I was pegged out inboard and even though I rarely cross chained like that it bothered me that it wasn’t perfect. Since I started using synchro I really only need it re-centered because that’s just how it should be.