I started the bird today.  I let it run steady for 4-5 minutes.  I'm feeding fuel from a gas can, until I can get my fuel tank cleaned.  Question....I noticed the fuel bowl is about 1/3 full.  It didn't get higher and the engine never sputtered.  Is it supposed to be full?  The gas can was at a higher level than the fuel pump  and it is connected into the fuel pump, so I expected it to fill the glass bowl,  providing the fuel pump is working to capacity.  Any ideas?