It was the pivot bolt. Its the stock one thats included with the SIG 3" nylon bellcrank. I also noticed that the bell crank is pretty worn in the holes that the lead outs pass thru, this only after about 25 flights..... IŽll probably retire the model, its a T/F Noblarf and its too much work to cut the model up and glue it together again. It would have been different if I had built the model, then IŽll probably had repaired it.
Well, well the next noblarf is just coming of the table. All mods included and it even got a cockpit.
Andreas