I bought a basket pipe from my b&m and it had a price sticker on the stem, which I promptly removed. It must have been there a while because there is a, for lack of a better term, "imprint" left on the stem, a kind of "negative". Im not talking about goo or glue residue but an actual image left on the stem. I tried soaking in whiskey, boiling, and old fashioned elbow grease to no avail. Any suggestions? On a side note: when I boiled the stem it changed color. Is this a common occurrence or because of the lack of quality involved in my cheapo device? I actually prefer this new color, but will want to avoid the issue in future purchases.