the first Thing you must do is take out any expo you might have put in.
Next run the motor and pay close attention to the throttle curve.
If the motor has most of the rpm below let say half throttle then start adding
negative expo (futaba) or pos expo (jr) to get the trottle responce that you want.
I use about -25% for my 3w qs106 and about -15% with my toc 100. Every motor will be different
depending on many different variables. Ie needle settings, Air flow around carb,norm running temp and so on.

good luck. Ihope this helps