I see that there are several older threads around the correct CG balance of the Explorer but I still don't understand why mine is tail heavy even though I carefully followed the build video. Mine is built with
- a speed build kit
- a GT2215/09 motor (original "C" pack motor)
- an APC 9x4.5 pusher prop
- a 2200mAh 3s Gen ace battery that weights 166g placed as far up front as possible.
- the tail pushed into the main body so the holes align.