Finally got the bird of the ground this very early morning. Correcting faulty wiring on the P2V (non-gimbal related) did the job.
I did my first successful test flight, the video is being uploaded to youtube as I am writing this.
Poor lighting conditions combined with very low temperatures resulted in average flight time, and too hard rubber dampeners combined with propellers that have crashed more than once, did account for some horizontal jitter. Once new rubber dampeners arrive from hobbyking and new propellers arrive from droner.dk I will do another test flight. I can't wait to see, how long it will fly without prop guards and a fully charged battery at normal temperatures :-)
Video will be added to the Showcase section as soon as it is uploaded!