I'm trying to clean out our chimney, and was hoping to remove the damper first, but I can't figure out how to do that. It's unlike any other damper I've seen before. We have an old heatilator fireplace, and the damper is not at all accessible. It's up too high and I can't see how a person is even supposed to go about getting to it. Even if I could figure out how to get it down, there's no way I'd be able to get it back up there again :/. How can I clean the chimney without removing the damper? The way the damper is situated, I think the dust and ash will just get stuck up on/behind it if I try to clean the chimney with the damper in there. What can I do?