Thanks elpfeite, for your info. I've not ever heard that one before. I have two year 2002 production Ruthenberg pipes and at least one from each year he made them. The draw was more open starting around 2005-2006, but no change in the quality of the pipes since 2002, that I can determine. Having said that, I do believe Brian's outstanding sandblast work has gotten better over the years, but again, while being no expert, I don't see any change in the quality or smokability of his pipes other than the more open draws of his recent production pieces.
Thanks again,
Pipestud