hey tom, i dint fly 2 flight that morning with it, on the same day, this happened a week after the 2 perfect flights, and i know why they were perfect, because i didnt back the throttle down to below mid stick, i was 3 quarter and over exept for landing but it was close in, so no interferance was encontered, i got interference a week later when i tryed to do a bank at a lower speed setting below midstick, i will phone desert aircraft and ask them, could it be the ignition...