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**Update** Hopefully the last! I changed out my air fuel screws and no noise! So maybe it was causing me to run lean. Dunno, I did buy em used and they are a bit beat up. Ahwell, failed purchase.


I'm wondering why anybody who has upgraded to thumbscrews would sell them... Weird!

Howbeit when He, the Spirit of truth, is come; He will guide you in all truth: