Have any of you ever experienced this phenomenon with a 412EP:
A particular aircraft will be VERY difficult to control in the yaw axis during hover. Pilots who have flown the 412 series for years will have difficulty smoothly hovering without dramatic yaw oscillations. Most noticeable when returning to this airframe after flying others for a while, so it seems to be something that you eventually learn to compensate for, but the first few days flying this one after being in other aircraft for a few months can be very difficult.
This is an AHRS equipped model that has had T/R rigging gone through completely, and Control Motion Transducers replaced also. This issue has proven very difficult to diagnose for the last two years.
Any suggestions would be greatly appreciated.
Thanks in advance.