Let me first say what's been done. 1.) The powerhead replaced all gaskets cleaned all exhaust housing and reassembled unit. 2.) I rebuilt carburetor and put it all back together with new gaskets and parts. 3.) I checked all fuel lines replaced screen and gasket and reconnected all lines. 4.) I replaced thermostat, I replace spark plugs, I replaced impeller water pump. 5.) checked compression, and it compressed at 80 pounds on each cylinder equally. 6.) put it all back together started immediately on second pull, and then ran for about 30 seconds and choked out. After the initial start, it tried to start multiple times. Now it seems like it's just choked but it still turns and I can still pull the rope but it's exhausting after while. It did pee water so the impeller is good and perhaps it's not sucking gas? I'm just not sure what direction to go at this point. Any suggestions from the would be greatly appreciated at this point. I've also considered hooking up temporary switch to use the electric start so I won't have to use the pull start. Any suggestions how to do that temporary switch