I'm testing out my bindings for the F-16. I notice that once I'm in the cockpit with engine running if I unlock the spider I can relock it, unless I open the canopy. Then after closing the canopy the spider won't relock, the cockpit eyebrow light stays lit and WARN flashes in the HUD. I can fly the mission fine. Is this something I just shouldn't be doing (opening and closing cockpit after engine start) or what. I searched the F-16 forum and found nothing on this particular issue. Happens on the Instant Action: Ready on Ramp, and Takeoff missions. Thanks.