FOr all you smokers out there who buy your tabacco in bags, do you know what the difference is? FOr those who aren't too familiar, when you buy tabacco in the little bags (for rolling) you have a choice of 100% cut, 90% and so on. It supposedly rolls 100% more cigarettes, 90% more, whatever. Does anyone know what chemical they add to this? I firgure it must be some kind of chemical because the tabacco is initially very fluffy and delcious but after a few days goes incredibly dry and turns to powder. What's the deal?