i have my dragon lady done. i have a TT 61 pro on it. i tried to balance it out yestarday using the CG range they gave in the manual. it will not balance. it is tail heavy. i moved radio gear as far forward as possible. no help. still tail heavy. any suggestions? i am using an engine on the small side of the recommendation from the manual. it says .61- .91 2 stroke or .91- 1.20 4 stroke. maybe i need to get a bigger engine. thanks for any help.