I have to agree with Redback and Mamba. Except for my CMP Cub which will fly in almost any CG position, my other two I had to move the CG forward at least one inch. On my Cessna 182-140, one and a half. RCU saved both of those planes from iminent disaster. On the other hand, being a real pilot who flys aerobatics regularly, Aft legal CG's Make for better maneuverability and might be somewhat favorable to a limit for an experienced pilot.