I have a question about the VOR/LOC mode of the autopilot.  It is my experience that the CS 727 has a difficult time keeping the CDI centered on a radial of a VOR, and it tends to wander a bit when tracking.  I find that I have to use HDG select mode to manually track radials while the A/P is in the VOR/LOC mode.  This is also how I correct for winds.  Is this normal or user error?  I have the CS 727-100 2.4 version installed with the flight model modification, altitude fix, MDA fix, and EPR mod.  I am using this with FSX Acceleration and Windows 7 64.