MFD Nimbus Session mount, 2-axis rotational with gear

I created this to get two things:
- a mount for my Session to be able to rotate it in yaw+pitch while giving it a gear for yaw to get more rotational freedom
- a bottom plate to mount it all on (instead of the provided wooden plate) to be able to move at least one of the servos inside the nose

Two versions of the Gopro mount are available:
- the normal version
- the "cold" version plus a lid for it. My Session tends to die on me after a few minutes in cold weather around 0°C/32°F. If you