I popped the cap off first thing when I got there and tried to start it, it was a no go. Put it back on and gave her some gas and a decent amount of cranking.
But before you cranked and cranked without a start, right?
What I mean by no-go is that you still can't get it started. This time you popped the cap, and even though it took a lot of cranking (because bowls were likely dry) it did start..
If tank pressure is causing furl starvation, then the next time it stalls you should be able to repeat what you just did - pop cap and long crank and then she runs again..