A few years ago we received and oil mister from a friend along with some other items. I could never get the oil mister to work and we returned it and received another. It has been sitting in the box for at least a year and I’ve recently taken it out to try and use it. However, as was the case with the first one the sprayer button is stiff and cannot be pushed and the pumper does nothing to pump air into the bottle. I am starting to think maybe I am doing something wrong. I have disassembled the unit, checked the gaskets, tried everything I can think of, and I still can’t get it to work. Does anyone have any suggestions? Thanks.