No kidding. I still have a 25 year old OSMax40 and a SuperTigre 60 at least that old. Neither of them have that doodad on the needle valve. The two Falcon 56s and the P51 that I had before I "retired" from R/C didn't need that feature. Anyway, all the needle valves then were all fixed to the carb and in the front whether you wanted it there or not!

There was no such thing as dual rates, multiple plane settings, servo mixing, and lots of other things. You had to buy special reversed servos or re-wire the regular ones. And there were no buddy boxes. Kraft was the big name in radios. Airtronics and Futaba were in much less expensive. My radio was a four channel MRC (Model Rectifier Company).

Man! I have got a lot to (re)learn.