So I was going to remove the stem on my Nording today, and the thing wouldn't budge. The only way that thing was coming off is if I twisted it in an iron grip and really REALLY twisted it really hard. I was afraid, scared, even terrified that it could break! So I simply put it in the refrigerator for a while and the thing came off easy as can be A great tip I learned right here at the Pipes Magazine Forums. Thanks everyone here for all the great tips to be found here.