It seems a though grate minds do think alike..... LOL!

The engine will run with the carb either way. I turned it around for the plane I'm using it in. I don't understand why it won't draw fuel through the tube for you. If you removed the choke did you plug the holes where the choke shaft was? I forgot to do that once and couldn't understand why it wouldn't draw fuel when I choked it with my finger.