Flew my ST for the first time yesterday and man what a handfull. The wings rock back and forth for no apparent reason. Also while flying it will go to knife edge on either side with no stick movement. The servos are Hitec 645 metal gears. The wing rocking I could understand if I was trying to harrier but it does this just flying straight and level about half throttle. I don't think it's a hit because nothing else changes. The C.G. is right on the money according to my cg machine, I've checked it several times. What could cause this?

Also the plane will not take off then all of a sudden bam it shoots straight up in the air. So far I'm not impressed at all with this plane. It looks good but flies like crap. Anyone have any ideas? Thanks!