Just a few changes made to the CX2. Increased Graphics and Physics to 200%. Battery changed to a Thunder Power eXtreme V2 5S1P 25C. Motors changed from GPMG 5120 to GPMG 5125. Rotor blades are MD500E Mains. I find this to be a very stable flyer but not very responsive,if anybody can improve it please do. I know these are basic changes but i'm learning by taking baby steps to start. Thanks!! P.S. If you change the cyclic pitch deflection to 25.0 and cyclic roll to 20.0 percent in the top main rotor its a lot more responsive.