Thanks for the valve info mtntopper, but I think you jinuxed me. After dealing with my fuel pump and filter, I had to get my carburator rebuilt. After 42 years of service, it was time to get the junk out it. Rebuilt carb, full tank of gas, and my Spryte runs great. All finished, I parked the cat on a slight downhill grade until my next weekend of use.
While I had ordered the inline fuel value shutoff, it had not come before I headed out to use my cat again. I arrived Friday night after a 4 foot dump to retrive my cat and ride in. As I approached it, I noticed a slight gas smell. When I had filled the tank the week before, I spilled some gas so I thought maybe that was the smell. When doing a little digging out around the front, the gas smell was super strong. Turns out the gas tank was higher than the carburator and drained 8 gallons of gas into the engine. The gas filled the lower engine and purculated up through the dip stick tube.
When I got home Sunday night, my valve was waiting for me in my mail box. You can geuss what I am installing this weekend! I figure after I get the valve in place I can figure out what is wrong with the carburator that caused this. Maybe the float if off a bit or one of the valves still has some dirt in it.