I appreciate everyone's insight. I do need to get the airflow models closer next. Attempts to do so previously ended with other issues, but now that this is fixed I can focus on that.

Another note, we also identified that the second and third pumps were not coming on fast enough with the hobbs switch. We have wired it off a different trigger so that when running all 3 pumps are on, and it's made a significant difference. Working with the virtual VE has been a pain to say the least.