I have a converted Ryobi 31 cc and it won't start, not even a pop. I am working through the process of elimination (checking the gap on the new plug, checking the magneto clearance, and it does spark) and it didn't look like it was sucking fuel when I primed it. Since I got it used I want to rebuild the carb anyways, however I am not sure if I have the right number to get the right rebuild kit. Its a Walbro and says 305 on the throttle arm, what appears to be WA79 near the fuel inlet, and 5-3620 beneath the throttle arm. I can attach photos if it helps.

Thanks in advance.