Thats funny because I also moved from a Superstar to the Four Star. And I just bought some velcro from walmart to put the battery behind the servos. Did you balance your plane right side up or inverted? Im having trouble balancing it right side up because once I get it off the ground it will balance for a second then it tips in either direction. It doesn't seem as bad trying to balance it inverted, but was just curious if you had the same problem.