Look through the side orifice and verify that the screw (62) coupling end of the beam (54) is loose and that the spring arm (242) is disengaged from the pin (243). Through the 3/4 ” NPT hole at the bottom of the case, push the flexure (59) from left to right with your finger to verify it is possible to move the beam (54). The value displayed should vary accordingly. Pin (72) must rotate freely inside the coupling end of the beam.