Starting can be an issue if it sits for more than 3 or 4 days. Usually full choke, one of 2 kicks, and it starts. Idles up wih the choke on.
Tried pulling the choke on a little to see if it fixed the problem. It accually made it worse. Made me think mabey its running rich. But once its warm and cleared, its not smokey at idle.
The air screws is the only thing i can think of. The carbs were rebuilt with the new motor. The mech might of possibly got them adj incorrectly ?
I will try to get them off and apart this week and check
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