All went pretty smooth with the injector nozzle replacement this evening ('cept when I dropped the aluminum spacer down the engine compartment -- took 10-minutes to fish it out).
I had my 5mm hex key ground down to fit under the tubes -- worked perfect.
Thanks Jim -- you called it ; a little fuel, no big deal. Just took my time and cleaned everything as I went. Tubes have enough play to only require removing from the injector end.
Thanks again all!
(now see my "stalling" post)