the title says it all.

and also why air pressure spreads unevenly?

(I get that air pressure is calculated per 4 square pixels)

.15 is the ave diff from left to right one pixel away (i tried pump and vent)

lowest is at the left and highest at the right

and for some reason the pressure goes the left

so it difficult(impossible) to make a save that crucially needs balanced pressure with tpt version 84.3