I did something dumb, I think. Haven't figured it out yet.
I flew my Slow Stick this morning and found I needed too much right trim. Landed and took it into the bench to remove the wing and adjust the linkage so it would be zero trim. Turned on my transmitter, plugged in the slow stick battery. Everything OK. Started to push buttons on my Futaba T6EXA radio to bring up the current trim setting so I could reduce it to zero and then adjust the linkage. Before I got there the airplane went to full throttle, full down elevator, full right rudder. It jumped off the bench, cut my arm twice, broke the prop, and tore the gear box apart. I fought it to the ground and un-plugged it's battery. (A little dramatic but sounded good.)
What did I do wrong? This is about 40 flights now. I have made these adjustments in the past without being attacked.
I'm glad it was not my AXI 4120 with a 13 inch prop.
It's just sitting there broke now and I don't want to duplicate my mistakes.