I got the dual CIVAs to align tonight and loaded the first
9 waypoints.  All went well until I switched the AP Nav
source switch to "ab".  Then the plane went into a LH
turn and the HSI heading pointer started flashing
from the top of the HSI to the bottom repeatedly.
The plane will follow the FSX loaded FP with the GPS,
but not the CIVA.  Has anyone else seen this or
have any tips for a remedy?
Thank you,
Ken