About 25 years ago, my dad converted an old silk and dope control line plane of unknown origin to R/C bought a Perry Carb for an old K&B .35 control line engine. Flew great until someone at the local club turned on their transmitter. I remember him saying, "beautiful inverted spin, where did you learn that?" It was .2 nano seconds later I yelled, "22, who's on 22???"