I am really curious about what the thought process is in this style of stem connector. Looking with a light in the shank area it appears to be a well area where this ball tip of the stem connector would align. Was this to allow moisture to drip off the ball into the well area? It was a cheap buy of only 15.00 dollars seems to smoke well after cleaning it up. But gurgles a lot but gets a good burn of the bowl. Just curious about what the design of the stem was intended to solve if anything and what results others have had with them. Curious minds want to know.