Hmmm..... That's a bit of a head scratcher. You describe the right turn as "really sharp". My FBC will not turn right or left "really sharp", unless I give it some throttle. Is the left turn still poor under throttle? You don't state what mode you are flying in. I would suggest you use expert mode. Don't let it frighten you because you are a new flyer and don't see yourself as an "expert"- you will have more control.
Try: Put the plane in expert mode. Get plenty of height. Try a hard right turn on full throttle. OK? Level out. Now try a hard left turn, again on full throttle. It should be the same as the right turn. (Let go of the controlls when the plane has turned otherwise it will enter a spiral dive - this is why plenty of altitude is in order).
If your control surfaces were level at the pre-flight check with the battery connected and the TX on, and both control lines were tight with no slack, the plane should perform the same left or right. If it does not, contact Hobbyzone. They have a very good after sales customer service reputation and will replace a faulty plane.
Let us know how you get on.