That compass is not designed to be mounted on a bulkhead in a vertical position. That's why it jammed and doesn't work. It is designed to be horizontally mounted on top of a wheel steering binnacle.
Thanks I'm mounting a surface mount on a 14deg sloped vertical surface. You gave me some ideas. The compass I'm installing can tolerate up to a 30 deg pitch. Most mount surfaces are not flat they have some pitch. Good video, fair skies and following winds to you.
