I am quickly losing faith in this brand new scale. A few examples: 1. Weighed 1 brass and readout kept bouncing between 171.1 and 172.0. Scale seemed to settle down and I weighed about 20 more brass until the scale beeped and indicated it needed recalibration. Recalibrated per instructons. Now the same brass already weighed and sorted are weighing from .1 to .3 grains different. 2. Last night, I weighed a single brass and over a period of about an hour, it weighed various weights ranging from 171.0 to 172.6. Scale never indicated it needed to be recalibrated. (brass weighs 172.2 on beam scale. Have followed instructions for set up, including warm-up and calibration. No air currents and no known voltage issues. Sitting on flat stable kitchen table. Any ideas from you guys that own and use Lyman 1200 DPS scales? Thanks!