When swapping out the servos, be very careful on how you connect the linkage and how the aircraft responds with stick inputs. Make sure, for instance, that the right stick (most US transmitters use the right stick) is for the elevator and aileron and the left stick is for throttle and rudder. The throttle, up and down, rudder, right and left. Make sure that when going to full throttle, UP, the engine throttle goes open. Conversely, rudder.. right stick moves the rudder right and left moves it left.

For the ailerons, stand behind the aircraft. Move the stick to the right. The right aileron should go UP, left aileron should go DOWN. Left aileron.. right goes DOWN and left goes UP.

Elevator.. pull back, elevator goes UP. push forward, elevator goes DOWN. MAKE SURE this is the way it is. If any are reversed, fix that BEFORE flying. You don't want to try to 'remember' how it is, you need it to be right before flying this aircraft (or any other for that matter). Don't rely on your friend/relative to check it out for you. Make sure you do it yourself and make sure it's right. Then, before flying verify with your friend/relative that it IS right and you are ready to fly. If you don't, well, it will be a very short flight.

Check out that BUG. It may look strange, but it is a great way to learn this stuff... very forgiving and very resilient.

CGr.