My Rex II powder is constantly changing its weight when I reload. I measure everything; and use a Universal charge bar in a MEC, and I want everything just exactly correct in my loads if at all possible. However, I have now loaded two cans of cans of REX II, and really like it -- but it is about to drive me "crazier" concerning its measurement. I can get it set just perfect at 20.5 gr., and then a dozen or so shells later on it is measuring out at 21.5 gr., so I reset it back to 20.5 gr., and then before you know it the stuff is weighing in at 19.5 gr. I like to shoot REX II and want to know what is the secret to getting it to weigh out evenly. I use a baffle between the charge bar and the powder bottle -- do you think I should take the baffle out???