I use a futaba 9c. I put in -60% to start with, I am now at -80%. I'm not familiar with that radio so make sure that you set the expo up right. Some radio go positive and some go negative. Just make sure that the control surfaces move less with the same input as they did before expo. Expo will take out some of the sensitivity of your inputs. FYI...One of the guys I fly with in my club flew his without any expo at first and it was a hand full, it was a blast to watch he was all over the sky. Just play with the percentages until you are comfortable.