I love using expo but wish to caution you in this respect. Ordinarily expo is used to reduce the sensitivity around center stick. The higher the no.% is the more reduction. This is my caution Jr and Futaba for some reason use theirs opposite to each other. For Jr you want to use the + amount of Expo and for Futaba use the - amount. You will immeditaly know it if enter wrong since it will become very very touchy.