Gs500 E Don’t jump on..help…

Hello.. to me today is the following, my suzuki drove quite empty, so she already jerked. Then I put the bezin tap on reserve, and could still save me to the gas station. And there it happened, when I opened the cock again (PRI) ran only full pulle gasoline out of the overflow of the carburetor (actually from both, but more from the left)!!! And she didn’t jump any more!!! When I turned out the gas cock again it stopped running and she jumped even more I was able to drive three meters and then she went out again! Then I put Hahn on Pri again and there was a lot of gas running out again, as if it had run right through the tank! Then the battery was empty and had to push her home.. Then I once turned the screw up at home from both carburetor chambers and let everything run out.They were totally full. Then put the tap down, otherwise would probably be the whole T Now I would like a tip, please, so that I can get it back in the morning!!!!!! Thanks greeting P.s must be the gas tap now actually on Pri or ON, I already read the PRI carburetor means flood, that means it is quite normal the fuel comes out of the overflow or? But why does it not run at ON position, had the feeling that the gets no sprite.