I am presently flying my Dynam Waco without any problems..When flying it with SKY Lipo 2200 ma 4 cell...it is mounted just behind the front magnets...
Plane will spin like a top...when usingNANO-tech 26500 ma 4 cell...I have to move it further back to get it to spin..The plane flew just great on the first
flight and all others...when it is windy 10 mph I use the 26500 ma pack further forward....flies just great...a winner.

Codimasta AMA 11269