I always power up the heli first then switch on the tx and scroll the thottle up and down and that's it!! Binds always when it was stock and same sequence after brushless mod. The only thing I can say is that with the BL motor the F45 jumps off the floor if you give it 70% throttle not lift off!! I will post an indoor flying clip I just made after installing 3 leds on the tail boom
Ok here it is. Enjoy. hope i ll be able to make a good video sometime tomorrow flying it somewhere outside.