I don't have your combo but I also cannot get rid of the tilt jitter all the time. I set the gains low 50 and it does it and I up them to the 200 range and it still does it. It is not constant just when ever it feels like it, no rhyme or reason to it.. I have an av130 / nex5n 16mm lens.. RSGS does not like the longer lens at all. I am thinking to change to free fly servos ....
Is that with firmware 1.7 or earlier?
I found that earlier versions randomly rapidly shook occasionally causing a jitter. 1.7 seems to have got rid of that. Now I only have unwanted movement of the tilt when I'm rough with the aircraft & that's caused by the backlash. Direct drive can't come soon enough!
Freefly servos don't have significantly less backlash than a good example of a Savox.