Sounds much better. Demon carbs are something you gotta watch. They are set up fairly lean from the factory. For that one to be running so rich it tells me that having a carb so big, the carb just wasn't getting enough of a booster signal through the carb being on such a small engine. That engine really doesnt need anything bigger than a 650 carb. So with the 850, instead of getting nicely atomized fuel and air mixture, you were getting just raw fuel drops. Large drops do not burn easily of correctly, thus the need for so much timing. A Performer RPM wont cost any HP, but will boost torque on that little engine.
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