your right about the servos. thanks for sharing the build. i have been looking at this gas evo ,since it came out. the plane is really nice too. i looked at it on horizon's website also. i will soon buy one for myself and put it in my 40 big stick at first or my bel-air biplane. what a nice engine and it can take a 7.4 volt lipo on ign too. love to see first flights when the snow melts............thanks again. keep us up dated please......RON