STOP! You will be suprised what the manufacturer will do for you in a situation like this... See the thread I have linked here:
http://www.rcuniverse.com/forum/m_4876737/tm.htm
This is a story about a freind of mine whose RTF trainer had an inflight failure and Hanger 9 replaced the whole plane for him free of cost... even shipping.

By the way... Your instructor probably learned on an old Kadet and they originally did not have ailerons. Just throttle/elevator/rudder.

Good luck, have fun, never quit!