Hello everyone. I have an Acculab Vicon 123 and I don’t think its measuring correctly. When I calibrate it with 100gm = 1543.24GN when removing calibration weight it still shows around 20GN on scale, if I zero it and then put calibration weight back on it reads 20 GN less = 1543.04??? I got so much frustration with it, can not get it work. I changed environmental settings; there is no drift in the room, no cell phones.... If someone can suggest a good scale that works accurately I would appreciate. Thank you!