I am flying a Zenmuse H3-2D on my Phantom V1.1.1 with the upgrade board. I recently gave my zenmuse(have had it for about 3 months) to a friend who needed one on short notice. He ordered me a replacement and I installed it and have been flying with it for a couple weeks now. I am getting a lot of horizon drift with my new Zenmuse that I never had with the old one. I honestly haven't seen horizon drift this bad with any zenmuse H3-2D I've ever used (owned 3, dealt with way more). It reminds me of the drift I would get with my Tarot T-2D gimbal before you could calibrate. Can anyone offer any help as to what I can do to fix the problem? I'm hoping I'll be able to do some sort of calibration, as I did with my Tarot gimbals, to fix the issue. Here is my last flight I did a couple days ago, the issue can clearly be seen at 25-35 seconds and at quite a few other spots as well. Sorry for the long video, I don't usually post full flight videos, but I thought there may be some clues in the video that may help diagnose the horizon drift issue. Video: [youtube]http://www.youtube.com/watch?v=o2kEEBE6Ssg[/youtube] Any help is much appreciated!