Originally Posted by
will8428
i have ultegra rx805 rear derailleur, same problem.. even with e-tube 3.4 i can only modify the point at which full sync shifts the front derailleur as a reACTION o shifting the rear derailleur.. to heavier downhill gearing and not the point (moving rear derailleur) to a more easier uphill gear, i too was struggling with the cross chaining at the 2nd cog rear big cog front (uphill) so the solution is different.
adjusting the front derailleur micro adjust settings seems to solve the rub...
So your google search showed you a very old thread on the subject?
I'm not certain it's quite your issue. But maybe you should make a new thread and exactly describe your issue. Just so there is no confusion with any of the old stuff in the thread.
Have you been to this site?....
https://bettershifting.com/ There is a lot of information here.
Welcome to BF!