I recently had a conversation with a noted pipe seller who said that engineering is not the most important ingredient in a great smoking pipe. He said further that he has smoked many pipes with errant drilling that smoked well and many others with precise engineering that didn't. Of the two, he said that a chamber draft hole that emerges to the left or right of center usually isn't a problem but the same high or low is.
I have nothing but scorn for the likes of Peterson, though I know many people love them. While I respect their opinion, to say that I have to spend the big bucks to get one of their pipes with correct drilling makes me want to scream, as does the sloppy, and in fact intentional, when it comes to the chamber, application of dye.
To me they are all about calculated money making, and if they can save a dollar or two by dipping, why not? But this passes a problem to the consumer, for whom they have no respect, when in fact, since they are being paid to produce a pipe, ought to be managed.
I have one gifted Peterson pipe; I've never bought one nor do I intend to do so.