Centralized fire control followed in order to manage the information flow and calculations, but calculating the firing proved to be very complex and error prone.
As the pores shrink, the overall matrix shrinks as well, which may eventually increase the space the gas can travel through (the cleats), increasing gas flow.
The activity of ions at the electrode surface changes when there is current flow, and there are additional overpotential and resistive loss terms which contribute to the measured potential.