Mike and All: I was waiting for Doug Heitkamp to post this but I know he is busy with visiting relatives, so I will. In a phone conversation with Dough two nights ago we discussed this subject, and Doug says he has a photo that clearly shows #015 with two (2) hoses on the front end of the flanger. That would seem to confirm your source, Mike. (I'm researching #015
to build two in On3, in brass)