in the way-back days there was no government mandate for spring-return throttls. people rode for decades without them. the tensioning nut is there for your comfort and doesn't cost a thing. set the tension so the throttle stays put and adapt to closing it manually. you'll acclimate pretty quick.
Wow, no spring return on the throttle! I can't even imagine what that must have felt like.
in the way-back days there was no government mandate for spring-return throttls. people rode for decades without them. the tensioning nut is there for your comfort and doesn't cost a thing. set the tension so the throttle stays put and adapt to closing it manually. you'll acclimate pretty quick.
Had a 69 sporty like that when I was about 18...... Took me longer to get used to the brake and shifter being on the wrong sides than the throttle not snapping back..........