Sitting for ten or eleven months through last winter and all summer. I'm certain there may be more "sludge", but nothing stopping the engine from running. It runs fine. Maybe one year in the future I'll tear it down and soak all the carb parts in a "cleaner", just for giggles.
Not so much luck , as experience and trouble shooting.
Gentlemen -- start you snow blowers! It is that time of year.