grindog - Your engine sounds like it may be too rich, and your idle may be too low.

If it was stuck wide open until it shut itself off, you have may ruined the engine.

GReddy - All carb adjustments should be in 1/12 turns, or "hours" (think of the hours on a clock).

Once the engine is broken in, tune the top end for a nice, healthy sound, and good top speed in the environment you are going to be driving your vehicle. Once the top end is set, dial in the low-end needle for crisp acceleration with no studdering or hesitation. Use a good quality temperature gauge or probe to make sure your engine hasn't exceeded 240 degrees (an acceptable range for most engines; some, such as the original TRX .15, will run as hot as 270-290).

Adjust your idle a little on the high side when the engine is first fired up. If your engine is tuned correctly, the idle should drop as the engine heats up.