The following link is the only thread I can find where VS Mode fluctuation is discussed.
http://forum.avsim.net/topic/419461-777-rocking-problem/page-2?hl=mode
I'm still having this problem after testing different weather conditions, different VS settings, disconnecting my input devices etc...
Will this be addressed in the SP1 update? Has PMDG even acknowledged this as a problem to go fix?
(My LD767 can hold a VS, as can my PMDG MD11)
Mike Dessero