I know. Just curious as to what other carbs would fit. I know you mentioned a few but wonder what Brad used.
Bob
Brad said its a walbro and he had to switch alot of stuff around on it to make it work. If you look at the pictures he posted you will see the short adjusting needles in it.
The HS for the 4200 and 5200 have the adjusting needles close together instead of spread out like the ones on the 306-245.
Thats why I suggested maybe a HS from a big Husqvarna as they have the needles like that as well. But you may still have to switch throttle shafts etc for them to hook up right. Then the fuel inlet barb may have to be changed as well. Much easier to just get the right one.