I have my know how 250 built already and i 'm trying to take it on its maiden flight but every ...

[G+_Alex Gomez]

I have my know how 250 built already and i'm trying to take it on its maiden flight  but every time i try to fly it it tends to try and flip over.

the motors are spinning in the proper direction(1+3 clockwise, 2+4 counter) and i have the correct props on. everything seems to be well balanced.

In your video your quad seems to take off smoothly and straight. Any extra info would help.

Thank you guys and keep up the good work. 

[G+_Fr. Robert Ballecer, SJ]

Sounds like the ESCs are plugged into the wrong channels.