Lyman Pro 500 weighted scale My reloading process is basically charging through a RCBS powder thrower....then placing the charge on my Frankford digital scale to get it where it should be.....then placing it on my Lyman scale to double check the charge. The charge between the digital and weighted scales almost always matches. However, here lately the Lyman has been inconsistent by about 4 actual pellets. I guess about .04 grns. I know its the Lyman because I can place the charge on it and it will show a little too heavy. I take it off and put it right back on and it will be closer to a match. I take it off again and place it back on and it will finally be a match. Why is it changing? I am leaving it on for plenty of time. I have checked the zero while its doing this and its fine. It seems to be something else. I cant imagine what. Its not that complicated of a mechanism. I have already experienced the air conditioner issues and its not that. Its on a desk top that is fairly level. Its not PRECISELY level, but I didnt think it would matter that much. Besides, it just recently started doing it. I am not super delicate when I place it back in its drawer. Perhaps something got rattled around too much? Any suggestions?