I use two-finger swipes to both scroll up/down and go forward/back in history when using Google Chrome on OS X Mavericks. I find that frequently, when I try to scroll up/down, it actually gets interpreted as a left/right swipe; this is because I sometimes swipe somewhat diagonally. I want to basically shift the balance so that swipes at a wider range of angles are interpreted as scrolling, as opposed to history motion. How can I do this?
I had the same problem on OSX Mavericks and Chrome. Disable the trackpad gesture "Swipe between pages" helped a lot.
You can find it under System Preferences -> Trackapad -> More Gestures.
It didn't fix it completely but it is much much better now.