This carb. design looks well designed against carb fowling. I suggest installing an inline fuel shut off petcock valve, cutting off the fuel flow and letting the motor run the gas dry before putting her up for any storage. This way, if you suspect she won't start because of bad gas, you only drain the carb bowl and empty the fuel tank and skip the carb cleaning process. Without this I immediately suspect dirty carb on all no start issues and start there. Especially when you mentioned new fuel. An easy test to eliminate this is what Nordin mentioned. If it reacts different with the spray bottle or starts. You`re probably looking at a dirty carb.