I have a very basic question. First being new to pipe smoking, I am starting with a Missouri Corn Cob pipe. I'm starting with this pipe since I know I'll probably be rough with it as I'm learning, and I don't want to make havoc of an expensive pipe. After holding the pipe in my mouth for some time now, I've noticed extensive teeth marks forming on the stem. Is this normal? I must have exceptionally sharp teeth or something. Most of the estate pipes that I've viewed on ebay had minimal teeth marks. If I don't bite down I can not hold the pipe stable in my mouth. Any suggestions?