ET,

I don't think the volume of the OPS80 pipe is big enough for an OS91 - never had a K&B82, so not sure. From memory it was actually a bit small for the OPS, and always a bit critical on length.

Yeah , after some thought I concur with JeffH, 2nd pipe from JHH (but still made by MACS I think ?). I was having brain-fade as it was too early in the morning when I replied!

Mike C