servos move the same amount generaly less there for robots or some digital programmable ones but for the most part they move in a 60 deg arc. If you change your tx crystal you need to change your rx one also to match it.
Your old king and your new one have diff radio systems and are not really 100% compatible, it was in a thread here before. Move the weights back in toward the center and move the links an the servo arms out one hole. That will liven up the heli quiet a bit. King ll are twitchy as it is and can be very fast acting. btw are you running the stock motor and esc. Also change your pitch settings to about -1 at closed stick and 3 or 4 at half stick and full stick should be about 7-8. This will NOT work with a stock motor you need a brushless motor for the power to get up headspeed with the above settings.
Heres an attachmet of what those knobs do, actually if your doing barrel rolls I would assume you have a brushless setup and already know what they should do, but here ya go.
See the attachment.