I ditched my very new Lyman powder dispenser last week due to inconsistent amounts being thrown and the scale being inconsistent when putting the bowl on and of -not a hell of a lot .2-.5 gr off , enough to know a few charges were a little more powerful than others.I then purchased a RCBS powder dispenser which didn,t work -took it back for another -that one couldnt be calibrated -took it back and got another .This one does calibrate and does throw powder ok but -wtf- if I leave open the cover to stop breeze it throws ok ,if I close the cover it automatically drops its screen weight down from 44.3 to 43.6 or 8 on the exact same bowl of powder? the screens number when calibrated can move 157.o7 to 157.08 for example also .I read these machines are the business- are there chinese nock of,s being sold also or is god just not shinning his lucky light on me or am I asking to much ?