Hi av8tor. I had not tried the WD40 as I thought the regular carb cleaner would do the trick. But after reading your last post I decided to follow the suggestion. My carb does not have the brass insert but I know the hole you refer to. I gave it a good blast with WD40 and yes, it comes through into the venturi by blowing into both mixture needle holes. The only part of the carb I did not open up was the high and low fuel metering chambers. Those are the ones with the small moon like covers inside the diaphragm chamber. If the carb still does not draw I will open those up for inspection. In the mean time, I have ordered a DLE30 carb to see if it runs the engine better than the 20. The 20 gives me 6900 rpm at peak. That seems a tad low but that is the max rpm before going lean on the high side. (prop is a Xoar 17X6). My DLE 20's give me about 8300 rpm but if this is a 26 cc engine then 6900 may not be too out of line. I have a good idle and transition.
Thanks for your suggestions.
Mike