I have a flying wing and while there probably is a small issue with structural flexing between the fuselage and the high aspect ratio sweep wings looking at the log I wonder if there is a trim issue as well causing porpoising, servos seems to fluctuate a lot. The wing is setup as two elevons RC1,RC2 and two spoilers RC5,RC6.
Here is the log bin file: https://drive.google.com/open?id=0B07f-MuLfSBFdXBoUEVaU25HS2shttps://drive.google.com/open?id=0B07f-MuLfSBFdXBoUEVaU25HS2s
Any thoughts