Has any of you seen a, I call it a "bung adapter"? It screws over top of the O2 sensor and has a very small opening. Then the whole thing screws in the original bung. I have only seen one of these adapters once before and it was on a street leagal Audi TT/Rally car. If anyone knows what I'm talking about, might you know where I can get one and if you think this would solve my problem?