I've been mixing my own for a while now, usually a small quantity of each of one and three pound cut (dewaxed). People say to store in in a glass container and to only mix what you need, I use Mason jars and try to mix about what I need but there is always some left over that I would rather not throw out. My problem is getting at the stuff once I screw the lid back on the bottle and let it sit there for a few days or a a couple weeks or whatever, the shellac just sticks the lid to the glass and I often cannot twist lids off to use the rest. Does anyone know of a way around this? Are people using what they need then throwing the rest out and mixing more when they next need shellac? There must be a better way.