Yesterday I learnt about CG and pitch coupling in KE. I took my EP Fliton Prodigy up and it had 1 oz on the nose and the KE has always been so sweet, almost literally no coupling. I decided to take the 1 oz out and move the battery further up front. Once I removed the weight the plane flew amazingly good but when I went into KE the pitch coupling was NUTS! Hmmmm ... CG is so important.