Thanks guys, thanks magymat. I don't know how but the wagging decreased considerably.... I swear I didn't do anything, but now it's fine! It just wags very very slightly when I give rudder, I can fly easily with that, however, I'll decrease the gain if the problems persists after, at least I know that I can decrease it until 60% or so. For now it's acceptable. Thanks, that is my T-rex, it does some unexplicable stuff sometimes [:-]. Something else I don't understand and it has happened to me twice, after a hard crash the gyro reverses! when I try to spool up it spins and I gotta reverse the gyro from the heli and the Tx and then it's ok..... any explanation for that?????

About the steady light, then my gyro is ok, it's ON all time except when I give rudder (starts blinking) but after gets back to normal, but thanks for the clear explanation tippy, I didn't know anything about that.