GMAX vs. FSDS - Interesting observation

Set up a three hour flight from Cancun to Houston in the 421C... I set up a flight with some mild chop, then took off, set the autopilot, and took a stroll through the virtual cabin. I was surprised to see the ailerons moving in response to corrections by the Autopilot due to the chop.I used to see this in FS2000 with FSDS aircraft, but noted it was absent in FS2002, although only w/ the autopilot. Input from the stick allows one to see movement in the control surfaces, but not when the A/P is in control.Has anyone else seen this or even noticed it? The animated surfaces of the GMAX aircraft I have seem "alive" when the A/P is running the show, while the FSDS animated surfaces show no movement at all.-John