You could put a 36T ring on instead of the 34T... although if you're riding the 34 all the time, then personally, I think you just need to build more leg strenth. Ride the 50 more. There's always the option of a different cassette... you could put an 11-23 on there if you're in your 34 most of the time, and then you probably wouldn't cross chain as much.... assuming you've got a 12-25 or 12-27 on there now that is. If you have a 12-25 or 12-27, you need to ride the big ring more.