I set mine up as in the instructions. I put 50% exponential on everything. In high rates it will randomly snap roll in a loop, it can be very unstable suddenly. In low rates it is fine and easily flyable. I had never had a plane with high and low rates, in this plane it is essential as it is very unstable in the high rates. I fly in low rates until I want to hover and then I switch modes, I then switch back.