So last night I skipped running a wet pipe cleaner down my pipe, but i did use a little whiskey to clean the outside of the stem. This is the first time i have smoked and cleaned this pipe. Well it started to discolor and get kind of soft in spots. I let it dry and it firmed back up, but did i just ruin my stem? It still has a funny discoloration even after i tried wiping it down with some water and some paper towel. All my other pipes i have always swabbed where my mouth makes contact and never had any issues. Thanks for your help.