[Al Skierkiewicz]

Brigid,
If you are using the solenoid module on the Crio, watch the LEDs on the module and see if they are staying on the same length of time during every kick. If you are using a Spike, watch the LED on the Spike to check the action. My first reaction was "oh, you'rer using all your volume on the first kick". But there are a few other threads on CD that relate to program run and watchdog that seem play havoc with the pneumatics. That may also be your problem.