Hmm, just finished taking it back apart, now I see what you meant about the diaphram. That was a new diaphram but since I originally installed it incorrectly, it left a crease on it where it was being pinched. In a semicircle but a pretty big dent on the ends of the creases. The design leaves no room for error the way that the diaphram seal is on the edge and if the seal is not good, air comes in from the outside. I like how my Walbro carb is on my Gas engine. The diaphram IS the gasket. Much easier to install.

I'll have to buy a new one (or two) and try again. I hope that's it.