Built and flew RCM plans Flying Porsche for several years. Won,t fly upside-down. Don't ask how I know. Built a new one and am trying to get C.G. location. On plans it shows 7.5 inches back from leading edge. This is incorrect as I had to remove over a pound of nose weight to get mine to fly right. If there is anyone out there who is flying one and knows the correct C.G. location I would appreciate the help. Rick [member of Tucson Radio Control Cub Barnstormers AMA Show Team]