Hey everyone! I just bought my first pipe today and like any hobby I pick up I like to tinker around with things to understand what I'm working with. When I opened the pipe after an initial smoke (I let it cool completely first) and noticed this little metal slide piece wedged into the tenon. I haven't seen these in any pictures or videos I have looked at. I took it off to clean the pipe and was wondering what the function of this piece is or whether I should remove it for any reason, such as airflow. Also I didn't pay attention when I took it off to the orientation of the piece. Should the slide part face up or down when the pipe is fully assembled. Thanks in advance!