I just got a Classic army 1200 round box magazine. It takes a 9v battery and it is supposed to be auto winding. Here is the link http://www.airsoftmegastore.com/943...eries-1200rd-auto-wind-box-mag-spi-p252p.aspx So i put in the battery, poured in some bbs and turned it on. Nothing happened. Now i have never had a box mag before this one, so maybe there is something else i should be doing. But there doesn't seem to be a button on there that i have to push to make it wind.So am i doing is wrong and there is something else i have to do to make it wind, or is something wrong with the magazine?