Set up your pitch curve first.
only flip one dip switch at a time.
Set up the pitch curve w/ the motor wires disconnected.
Pitch limits go first, then set up the throttle knobs while flying. Lots of trial and error.
If you are a beginner, then the Heli should have been ready to go when you got it.
If you've messed w/ it, then set your pitch limits so that the servo is not binding at the end points.
get a pitch gauge.
Read some threads on rcdiscuss then post a new question.