It's lean, probably on the high. When it quits like that, lean is almost a given. Let it burble, that's not hurting a thing especialy when it's low time like this one. Later, when things are closer to being completely dialed in and you have some confidence built up, THEN work on the burble.

A rich engine seldom quits! That would be a good thing about now?

Edit: BTW, this hot weather is not real engine friendly. Even when right, they act rich. Just go with it when over 90 degrees. You'll find enough to sweat about without trying to get the engine running perfectly in that kind of weather....