Re: i am new to this thing and have a motor question/
Start with the clip second from the top. If it still runs bad, or that's where it is, move the clip down one first. (this will make it richer). If it's way worse move it to the top slot.
Reason would have it that you'd want to go leaner (top slot) but if you are already lean for some reason, and you go leaner first, you risk smoking the engine.