I am experiencing a problem with the results of Automated FFA. For one node the FFA is equal to zero. I checked everything in the model. Everything seems to be OK. The steady pressure in that node is 51 psi. When I tried manually by assigning 22000 L/min it gives a 16 psi residual pressure. Also the iteration for that node was only one, but for the others about 3 to 5 iterations.