Sully,
I assume it ran fine when you shut it down the last time. You've tried 2 fuel pumps and blown out the lines to the tank. Try isolating the delivery problem to the carb by removing the fuel line from the carb and crank it with a catch can to see if fuel "wants" to enter the carb. At least you'll know if it's something in the carb or in the path from the tank to the carb.
Verne