Trouble starting '72 Valiant

These days I just slosh a bit of fresh gas (about a teaspoon per, nothing measured) down the front holes. Then I get in and hold the throttles wide open until she starts to wake-up. Then back off to half until she catches, and starts to rev. Then a couple of spanks to fill up the accelerator pump, and slowly bring her back to idle. This for an engine that's just got an empty carb, and is known to have run a week or two ago.