If you don't have any expo programmed into your radio you may want to give it a shot. I typically run anywhere from 50% to 65% expo on my elevator, depending on the bird. I've got a P-51 that is very sensitive on the elevator so I have 65% expo on the elevator, whereas on my 28% Laser 200 I have 50% expo dialed in. Start with 30% or so and go from there. Good luck!