I'm sure its probably operator error, but my last three flights have had two new issues. After loading 'short' when I go to take off I get a Master Warning of Config Stabilizer. The main problem though is after the autopilot is engaged in flight I cannot disconnect it. Weird. If I yank on the control yolk it does disconnect, but that's the only way. What am I doing wrong? Thank you.

 

 

-stabilizer - you are probably not trimming close enough to what FMC deems correct position. retrim.

 

-no disconnect: what are you using to disconnect the AP?

Pressing CTRL+SHIFT+Z works in disengaging the Autopilot for me.