Re: I think I need help. Bike Running too rich?
I concure. I never expect an engine to start performing until it has at least two hundred miles on it, and even then I can expect better with 300. All of the symptoms you describe are those of a new engine that isn't broken in yet.
Also everything Gearnut said should be followed. Do not run outboard oil in an air cooled engine. And do not run the 16:1 oil mix that so many 'instruction books/videos' recommend.
The idle speed screw on the NT carburetor has no effect on how the engine runs. It is a simply mechanical function that determines how far open or closed the throttle is at the idle position.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"