@
dodgerdad....
If you were to fully warm up the bike (as when setting the pilot screws) with choke lever confirmed in off position...what effect does slowly turning each pilot screw (not both at same time, but one side at a time) all the way IN have? (to lightly closed, not jammed shut)
As the screw is turned in...does it lower RPM from that cylinder? As it approaches closed position, does that cylinder continue to run? At closed, does the cylinder nearly shut down? But return the screw to 2 1/2 OR preferably the setting that achieves the highest RPM....THEN do the opposite side.
Does EACH side have the same, near approximate partial and fully shutdown results? Or radically different?
A cooling fan blowing towards the radiator/engine is a good idea....as are gloves or rags strategically placed to shield from burning your hands.
Please discuss your findings here, be careful, repeat test as necessary.