Thanks tippy. I am using DX7 and I have 2 helis, a raptor and a t-rex. Sure I always remember to switch of model.

Thanks for the explanation about reversing the gyro channel in the Tx. I wasn't sure because I remember I read in a forum that "each time you reverse the gyro in the gyro, you have to reverse the gyro channel".

About reversing my gyro in the gyro (gy401), It has been twice in 12 crashes (long historial, eh) that I try to spool up and the heli starts spinning (I always allow the gyro to initialize correctly, always), so what I do is to reverse the gyro in the gyro and voila! it woks great again, I have found it pretty weird though.

Thanks again