And I can take what Ken and Dave both said even further. Some planes can be very responsive to small control movements, and going beyond the factory recommended throws can result in a plane almost impossible for someone with out a lot of experience to control. I've seen a very experienced pilot get it wrong and have too much throw and the plane only made it through half a flight before he closed the throttle and made a landing that rendered a fairly repairable aircraft.

I'm guessing, but by the number of posts it sounds like you're rather new to RC aircraft - so stick with the factory recommended throws until you have the experience necessary to deal with increased throws.

Hogflyer