FWIW, the wind is my suggestion also. Make sure the wind and gusts are turned off. Hit the W key on the keyboard and the menu will pop up. Also check the trims, adjust the trims. Get the heli light on the skids on the sim and then set the trims so it doesn't move much. It will never sit still and hover by itself though.

Also something I found very interesting is that flying the helis on my G2 sim are more difficult to fly than my Raptor 50. I also did not like the Impala trainer heli. I like the .46 size heli better. However, I have found the Folier 60 to fly the closest to my Raptor 50. Powerful and sensative on the sticks.