We sprayed 200 acres of pasture last week and noticed that calibrating the pumps never seemed to work. First we noticed that the max output was limited to 5.9 gpm. A 3 gpa set point would put out 4.5 gpa. Upon further inspection, we noticed that the back load cells kept falling off of their pads on the frame. We did som adjusting and adding “bumpers” to the sides of the tank to keep it in place the best we could. But still the pump calibration would only allow 5.9 gpm after the modification.