Kiehin race carb throttle return springs

[Flynt]

turning the hex head under the carb top controls up or down movement of the slide. Raising the slide (turning the hex clockwise) decreases vacuum...lowering it (turning counterclockwise) increases vacuum. The center slotted screw locks down the hex head adjustment nut

That's right...  been so long I forgot how I did it.  Anyway, the adjustment is possible using vacuum port between carbs and head...

Frank

[JMR]

turning the hex head under the carb top controls up or down movement of the slide. Raising the slide (turning the hex clockwise) decreases vacuum...lowering it (turning counterclockwise) increases vacuum. The center slotted screw locks down the hex head adjustment nut

That's right...  been so long I forgot how I did it.  Anyway, the adjustment is possible using vacuum port between carbs and head...

Frank

So I'm not the only guy that experiences that phenomenon.....I feel better now.