Most 11.1 carbs work the same...the carbs found on Ebay are mostly smaller and many have no high speed adjustment, so watch what you find there...I looked last night, most were really small takeoffs and would not be what you want...There is no magic to the 11.1 number, it's just very common on small engines...I just ran a G23 with a WA125, 9+ mm, turned a Mejzlik 18-6 7500 rpm with a lawnmower muffler...Carb size is not all that important....