I have a dragonfly 36 cp helicopter,being used to flying fixed pitch the change to collective was quite different.

I can hover fine but i find i cannot keep a constant height,the heli seems to jump up in spurts and go downwards in spurts also,i cannot get the heli to be stable in height,yes i know you do have to actually fly these cp helis but it just feels not right.

I have adjusted the pitch servo arm position to a closer hole to the centre of the servo as suggested before but this has not cured the yo yo effect.

Any suggestions would be greatly recieved.