That turned out to be simple, but interesting. When I parked it, the leak seemed to stop. That told me it was only leaking under pressure. Came inside and took a break for a while. Fuel tank was low, so when I went back out, I filled it first. Turned the key to start the engine see if I could find the leak under pressure. It wouldn't start. Tried to fire, but sputtered. It has never not started before, even in cold weather. Tried several more times, same thing, sputter a bit, but not catch. After about 6 or 8 tries, it finally started.
Didn't take long to find the stream of fuel spraying on the engine from the hose at the inlet to that banjo fitting. Luckily, there was enough hose (just barely) to nip it back an inch and remake it. But then the starting issue came back. Same thing, took several tries to get it going. After letting it sit for an hour or two while doing other things, I went back to it and it started easily, fired right up.
Only thing I can think of is air in the line that needed to be purged.
But why are fuel lines splitting? This is the second one, both right at the fittings. Looking at the short piece I cut off, the split is obvious. Do I need to consider replacing all of the fuel line? If so, what with? Braided?
Also, I still have the question about the Hydro Fluid I posted above.