Ok, I've purged it (from a bottle)and the miss became very intermittant for a short while.
Now its back. Misses more often than not.

I have found it to be #1 by loosening each line at idle. Of course I started at the rear.

Any of the local auto parts places (napa, autozone...)have a socket that fits the injectors? I'll try swapping holes if I can find a socket.

What can I thread in there to do a leakdown test? Rule of thumb for leakdown?