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Old 09-15-2021, 02:23 AM
1QwkSport2.5r's Avatar
Join Date: Oct 2006
Location: Cottage Grove, MN
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If your mixture changes in flight, I’d be ensuring the spring behind the barrel is not stuck or squashed. Many carbs have a spring that pushes the carb barrel out slightly holding it against the alignment groove which prevents the barrel from moving in and out against the “slop” in the groove. I would look at a parts diagram to make sure it’s supposed to have a spring and if so, check to ensure it’s still there. If it is, sometimes stretching the spring out a little bit will put more tension on the barrel to solidify it a little bit.