I have a Dunhill pipe that is in one of my favorite shapes and finishes but it has really been a disappointment as a smoker. In fact its my only bad smoking Dunhillo I've been afraid of doing anything to it because it has some sentimental value as my first "expensive" pipe. After 25 years of rarely smoking it because it smokes very wet and hot I decided to open it up. I went to about 4.5mm and v'd out the button slightly. What a night and day difference! Its like a whole new pipe. I'm nearly done with a bowl of Germain's Special Latakia Flake and Krumble Kake mixed 60/40 and the flake is extremely moist and the pipe is barely warmer than room temperature and not so much as a gurgle. Why didn't I do this 25 years ago?