Any ideas how to stabilize a dual-drone?

#1
Hello!

I'm suspecting this design is just fundamentally flawed, but I'd like to use it as a studying option to see where it went wrong and why. Not at all by any means finished, i am mostly looking for pointers to a right direction. Any suggestions are appreciated.
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If someone wants to try and fly it around in it's present, self destructive rock-like state, the controls are arrows+q+e for rudders and engine roll movement, x for engine startup and shift+alt for vertical movement. r & f for engine tilt.
 

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