ITC, I looked hard at the pull/pull application. One of my Sebart models came with it and I was skeptical at first. Of course, I've heard it's been used in pattern off and on for many years but with today's servos, it became very interesting to see Lassi do this on one of his earlier Sensation[?] bipes.
I had wondered if Bruckmann had used it on his ultra lightweight Pandora. Even though it touts Hitec sponsor decals, I wouldn't have thought they had a servo within his needs for that level of model. Photos don't show much in the tail so perhaps someone here can enlighten me. I asked a pattern friend in Japan but they apparently don't think much of the system today. The advantages are there but I've wondered if it's worth the effort and mainenance.