guys i did try an experiment...(all passageways are clear and clean by the way)
...took out the throttle barrel and shot light through the opening....in a dark room i viewed the fuel inlet and could see light through the fuel inlet without the needle...
upon screwing the needle, the light did get dimmer and at the point of full close of the needle, there was a micron of light still visible....almost no light through except for a slither of it....is this normal? however i doubt at this point, when fuel is passing through and not light!, that little amount of fuel is not sufficient to start the engine....am i right?
therefore how did the engine idle so well yesterday with screw completely turned shut?