I have to say thanks to the quality of the PowerBox products! In particular PBR-9D receiver strength! On Friday I was flying my 1/3 clipped wing Cub, towing a banner. I was not able to open the tow hook due to banner drag and tow hook servo with not enough power (bought the plane with it installed and, my fault, never checked the servo type/power), so finally managed to have an emergency landing with the banner still attached to the plane. What I found after landing was the servo literally melt! It was connected directly to the receiver, which indeed resisted without making a glimpse!! So thanks!! If the the receiver failed, I would have lost the plane!