I've been trying to learn how to roll my heli. I've only practiced in the Realflight sim so far. But i wonder what kind of modifications i have to do to my heli to get the rolls to look good both to the right and left.

As it is now i can do pretty good rools to the right in the sim, but when i try to do them to the left everything goes so slow that it is impossible to keep it in a straigth line.

Does anyone have some information on what i have to do with my simulator model to get it to roll good both left and right?
Beacause i want to be good in the sim before i try it for real.

And what kind of things should i have to change on my real heli, a Raptor 30, to make the rolls nice both ways?