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I forgot to add there is also a huge bog when the secondaries kick open. I went back to box stock jetting, Even at 3500rpm, it will fall on its face for a second or two. It won't even break the tires loose if ya give it a stall and try to launch it. It's also getting about 8mpg.



Sounds like the carb is way out of tune which ins't surprising if you have it out of the box set,, adding the other carb may or may not fix it , ask your friend if you can try it and see how it runs .