My elevators were medium and the rudder very soft. I didn't lighten them and mine balances just fine with a Saito 100 and a 2150ma 4.8v pack under the fuel tank. My ailerons were a different story. I had 2 soft, one medium and 1 hickory. I cut the medium and hickory in half an biscuitted them back together to make two equal weight ailerons and installed them on the bottom wing. When I trimmed them to length, I made sure to cut off more hickory than medium to lighten them further.