I use an alcohol retort.They can be purchased on ebay for $25.00.It will rid you of the ghosting.I use it on all the (OLD) estates I buy.I read an article on mold inside an old pipe,and I'm sure that as many as I've bought and sold,some of them had it from the smell they had when I received them.In my opinion,an avid cherry smoker's pipe,is worse than the musky smell :lol:
http://www.youtube.com/watch?v=aZfxlg5WWGA