My H3-3D has about a 3-degree horizontal tilt and from all the research I've done, it seems there's nothing I can do to fix it. It's a great gimbal otherwise but given this issue and those so many others seem to have with them I'm probably going to move to a platform with software adjustable setup and calibration. Whether user configurable or not, the ones I've considered so far are- Feiyu Tech Mini-3D Tarot T4-3D (this one uses a retainer that goes around the lens so modifying a different securing bar would be necessary in order to use a Backbone or filters such as Polar Pro. Walkera G-3D (this one has the tilt motor on the right side where the GoPro connections are which seems pretty inconvenient) MC6500GoPro-BLG V2 3 Axis Gimbal from CNC Helicopter for $238. Apparently it uses a pre-calibrated Alexmos controller board. Used Master G Currently I'm using a P2 but keep threatening to build a 680 Pro so while some of these gimbals are actually designed for a larger aerial platform, they should work on the P2 with some modifications. However, for transporting reasons it would be inconvenient for the gimbal to hang below the P2 landing gear. So what other gimbals are you using?