Hey, thanks very much for the info 'oxidized_black'. I have a overly rich idle mixture which I can't lean out. I'm a retired auto/motorcycle mechanic but have never seen a idle mixture screw without a fine tapered end on it.
The one I have here has a short taper with a flat ending.That doesn't seem correct to me. I been looking for info on the carb or a view of the mixture screw but no luck so far. Carb model is PZ19 ser # EK04E9
I'll keep searching and post any results. Thanks again Cooter441