After talking with J Dot about my issues he recommended the following to begin with:
- new rubber mounts (original H3-3D)
- original props only
- balancing of props
I tried to put some ear plugs in the rubber mounts (black china ones that came with gimbal) and with stock 9443 and 9450 props the video was MUCH better.
In the near future I plan on buying a prop balancer and balance my props also to buy the original H3-3D rubber mounts (really cheap and worth the money !).
With some future tuning of the PIDs and motor power I'm pretty sure I will obtain what I want.
The rubber mounts are much more stiffer now ! and the aircraft is not vibrating anymore. The original chinese ones were so bad that the small vibrations from the weight of the gimbal was shacking the entire frame !
This is a quick temporary fix only. I'm pretty sure the original H3-3D ones will give even better video combined with balanced props !
P.S. I think I've lost around 2 minutes of flight time with this gimbal compared to P2V servo stock. I'm not 100% sure but its pretty close. Also using the wider and taller landing gear (China) its quite annoying and its so weak I'm afraid to hand land it since I might break a leg ... I need to somehow find some raisers for the old legs and still make it fit in my case
Also removing one antenna from the egg camera (the one covered by the motor) and mount it on the case of the pitch motor. Haven't tested my range yet but I'm pretty sure its suffering also :S
I remember someone saying save some bucks and buy P2V+ part and transform the P2V into a P2V+