KZ400 W/Keihin PE28's - Stumbling at "cruise"

knitt31

New Member
Jetting question!
My bike idles great, and pulls great throughout the entire rpm range. However, when the bike is cruising comfortably, it stumbles. This happens at any speed. It pulls phenomenal, but it doesn't just "cruise".
Plugs are showing a rich condition.
Carbs are Keihin PE 28's.
100 Mains
40 Pilots.
Any thoughts appreciated. This is the last demon on an otherwise phenomenal little bike!
 
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