I have a question for those more experienced with meerschaum pipes than myself. Have any of you experienced problems with cracking? I have now had 2 meerschaum pipes meet their end with severe cracks while smoking. The first was an admittedly low quality churchwarden that cracked at the shank while smoking. The second, a bent billiard with relief carvings around the bowl, cracked around the circumference of the bowl and vertically down the side of the bowl. I'm at a loss as to what has caused this and as a result I'm shying away from smoking the remaining one I have and seeking some suggestions from veteran men of the meer.