Don't forget to make sure the antenna is not looped back on itself, anywhere. Also, range check the radio with the engine running as well. Many interference issues only crop up when the engine is running at different speeds. Just make sure you have somebody holding the airplane just in case the engine goes WOT on you. Check the crystals on the transmitter and receiver for proper seating. A loose transmitter antenna is also a fairly widespread issue with new equipment.

Luckily the damage to your model is quite mild. At our club we had a midair collision which totaled two trainers last week. One of the instructors came out of a loop surprising the other and BOOM!! The engines were never found.