Old bad gas with any ethanol can and will clog passages in a lot of carbs from corroding them Even Holley carbs . Unless they have the special coated bowls and metering plates for ethanol type fuel
Me thinks the best way to get around this is to run the tank dry when you know it will sit for more than 5 or 6 weeks and then add new fuel to run it on when you start it up the next time. Can you get any non Ethanol pump fuel there If so ,even if it is 87 octane regular, use a tiny bit of it (1/2 gallon) to run it on before letting it sit so it cleans out all the ethanol fuel in the system