912 carb setting

[SkySteve]

I have have the same issue and so does John, my hangar parnter (model IV speedster). Sometimes we have wondered if our engines will quit on final. I have noticed it more on days with high humidity, like just before and just after a snow storm. Low humidity days do not seem to affect it. Do you think an adjustment back to the original needle position is going to be required or desired in warmer dryer weather?