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I've got a new 300 XC with only 6 hours on it. It seems to be bogging out on mid- top range.It ran perfrect when
I bought it. Anyone else ever had this issue?
 

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I have the same issue, 18 hours on a 2020 XCW 300 TPI. It has been running great but now bogs in the mid to upper range, feels like a lean bog rather than rich. I adjusted the air bypass screw slightly in with some improvement. I am not sure why this issue has shown up now after it had run so well. It looks like I may have to continue tuning this way but may need to add on an idle screw to speed up the low idle that results.
 
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