Kevin - I have not had one of the imitation Rochester B's here, and won't; they, and ALL other imitations are now permanently banned from our shop.
But a few years ago, had an imitation Carter YF come in with metric threads, at least I think they were metric. At least the screws that Carter used would not fit.
I have suggested this is a problem with these off-shore imitations; there is no available documentation. If it were a real Rochester, someone would be able to determine exactly what it was, and I have original bill-of-material for all of the Rochesters, and could easily look up the part.
This is why I suggested to PastorMatt to try contacting the importer, as the importer might be able to help; the rest of us are simply guessing.
Jon
