it has a Zama C2 20-20 carb. Cleaned carb with chem dip and also judicious spray of carb cleaner after taking out the needle and all diaphragms and gaskets. New fuel line. New carb kit including Welch plug. New fuel filter. New Champion cj6 spark plug. Strong spark. Compression 130. If I pour a bit of fuel in the spark plug hole it runs for a bit. Tried with H and L at one turn from seat. And then 1 1/4 out. No dice. The spacer and external gaskets look good. The reed valves are in good shape. I'm stumped. Any suggestions would be appreciated.