Re-bind it to your DX5e and measure the control throws on high and low rates, or look in the manual and see what the recommended high and low rate throws are. Then set your high and low rates on the DX6i to give you the recommended throws. Whenever I switch radios on a plane, I always measure my high and low rate throws with the old radio, write them down, and try to note where the neutral trim is on each control surface (like " +2 mm from center"). Then when I set it up on the new radio, I dial in the same throws and trims. That way you will have very little trimming to do at the field when you first fly it with the new radio, and it will feel very much the same as it did with the old radio.

You can also dial in some exponential to help tame it down a little. Expo will give you tame throws near the center of the stick, but give you higher throws out at the extremes.