Unfortunately I have not yet gotten around to mounting them.
I have spent the season dialing in the throws and trimming so I have something to compare to when they are mounted.
For some reason the BUSA SC needs quite a lot of down elevator for level flight, and when dumping the flaps I need full down trim, as well as a bit of stick pressure, to prevent a loop. But with adjustment of throws and pushrods I´m close to something useful. Without elevator authority in the flare there is no need for VG´s. :-)
But I will update this thread when they are mounted.