Scott, Sig recommends 1" up- 1" down on elev., 1 1/4" left- 1 1/4" right on rudder, and 5/8" up- 5/8" down on ailerons. The CG should be 3 7/8- 4 1/2 from the leading edge of the wing. The 120 is a great flying plane- ENJOY!!

Scott