Originally Posted by enrico0273
Sorry guys, should have been more specific. The shutter/chatter is after I take off. The tail moves up and down for no reason in flight to the point I almost crashed from about 8 ft off the ground. It seems to be worse at high speed but does it at slower speeds too.
Cool. so at least it is localized. As Joel said, check for slop in that elevator axis, then. Likely you will find something loose, bent, crushed or otherwise not up to scratch. I have found a tricky little problem is when the control horn gets loose at the foam interface (usually due to crash or hangar rash). That's one you have to both look at and wiggle with your fingers to check out. Should be no play there.