Problems with FD?

[ThatAnnoyingLinuxGuy]

Hey, I just started learning the systems on the Challenger, so I am coming from the presumption that I'm probably doing something wrong here... My flight director isn't really making any sense when it comes to pitch. And when I activate autopilot, it flies the plane at a correct flight envelope, while the FD is indicating a pitch value that's absurdly above or below where the plane is actually flying. Here's an image of what I'm talking about:

Anyone have a clue what I could be doing to cause this misbehavior? 

Edit: OK so I closed the 14th stage isolation valve and opened it again, and that seemed to just pop the FD exactly where I would expect it to be. I'm not sure how that helped, but I'm very determined to find out!

Edited March 18 by ThatAnnoyingLinuxGuy

[Pils]

Hard to say without seeing more. Maybe a video next time if it’s repeatable?