Hi Dudley,
I have to say that I concur with a lot of what he says. I bought new pipes when I could afford to do so in my early life as a pipe smoker. And, I would "smoke the hell out of them" and they would do just fine. However, I do have one pipe that can only be smoked once or twice before it begins to go South on me. It then requires an extensive cleaning and a lengthy rest. I've posted about it before. It smokes very well once or twice before it goes sour. I've tried numerous different tobaccos, I've tried all of the suggestions that have been communicated to me, and none seem to fix the problem. Believe me, I would love to smoke that pipe for hours or days, but it simply won't permit it. It's my Peterson System Standard 307. Heck the bottom line may be that I got a bad pipe, but my first smoke in it is always excellent. I guess that's why I haven't given up on it.