Originally Posted by joejack951

If you can't use the full range of the middle ring without chain rub you need to work on your FD setup. As far as cross chaining, my advice is don't worry about it. On my 2x11 bikes (Shimano 105 and Campy Chorus) I use every single combo. I get some rub in the small/small on the Campy bike but it also has 135mm rear spacing (a known compatibility issue). If and when stuff wears out I'll replace it. Seems a lot easier than trying to hack together a crankset that will wear slightly less quickly.