Hello all, I am somewhat new to pipe smoking although I first started smoking pipes 10 years ago, I never really got serious about the hobby. However, I am now diving a little deeper. I have a pipe that I picked up from a street vendor in Moscow, Russia in 2004. I don't speak Russian, so I couldn't really ask much about it. If anyone has any ideas about the pipe, please chime in. Specifically, I have a question about a small metal piece that sits in the bit. What is it and do I need to keep it in there? It seems like about half way through a bowl, it starts to gurgle and I think this piece might be trapping moisture. Any help is appreciated.