Fusion, first make sure all the conditions are right, solid level surface, eye level, no draft and clean the hinge point. Do you have weight checks? I zero mine then check the calibration with several weights varying from .2 to 20gr. And then back to zero. I also always tap the beam and let it bounce to make sure it "settles" correctly. It seems sometimes with small weights it "hangs" usually a little low.
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