Reading extensively on the forums, the accepted wisdom seems to be, don't pull the stem from the pipe to clean it untill after it cools. But a vintage Kaywoodie I bought has a screw-in metal end on the stem, and it screws into a metal socket too. So it seemed to me to be engineered something like an "army bit" -which I've only read about- and which can apparently be cleaned while hot. I'm a new guy. This hoby is a little complex, and I wouldn't want to ruin a nice vintage briar, so should I be patient and cool it or clean out that stem while its hot? Second question. Is what I read true about an "army mount" and ,if so, why not buy that type of mount exclusively as the ability to "clean on the go" seems to me to be a more practicle pipe. The opinions of those more expierenced will be most apreciated.