So, this is a brand new truck? Here's one posibility, if it's new, you're running it really rich, which can cause the engine to die, especially if you give it too much throttle. If an enginge is hot, and you try to start it agian, it will sometimes have what is called vapor lock, which essentially will keep the engine from getting any fuel, until it cools down. Of course, that doesn't explain the lack of compression. It probably wouldn't be a bad idea to take it to your LHS amd see if they know what's wrong, it's hard for me to give you any ideas without knowing all the specifics that you get looking at the motor. I would listen to the guy at your LHS though, and next time you start it, make sure your High speed needle is 3 turns out. Let me know how it goes.