hi there i have a trex knock-off it flys sweet loops rolls backflips but when you hover in normal mode the tails difts to the left slighty and in idleup at hover the tails difts ot the right slighty and when flying in straight line sometimes the tail kicks to the left about an inch then back again
would anyone have any ideas
thanks

heli is kds 450 metal version
has a gm 700 gyro
and a towerpro servos
also running my own jr tx and rx