Thats you rolling into it as you have too much ail movement.. Check out the Vids of B1's at Kentucky if there are any with his set up on the roll and compare to how it was flying at BITW. Also for some reason I found it needed less movement in roll one way compared to the other.. but that could just be a B1 thing Try wings swept straight and level and rock the ail stick left to right, right to left and see if it all feels balanced. Even with the smallest of roll inputs I can get the Bbunny to roll easily.
I am with D on the perception thing. This time last year I would not have touched a FEJ model, but the more I see of them in action and actually get to fly their newer products, the more impressed I am.