Hello all. I recently acquired an old meerschaum. I think it looks pretty great other than minor cosmetic issues that I’m not worried about. However, there is the hardest cake I have ever come across in it. I could not get a pipe cleaner to go through the draft hole at all, no matter what I used to try to clean/break up the blockage. I finally decided to use a drill bit to clear it. Anywho, my question is: Do I leave the cake in the bowl and just accept it will not budge, or do I use something more powerful than rubbing alcohol or dish soap and a pipe knife? Thanks in advance. Here are some pictures of said pipe. You can see the drill channel in the bottom of the bowl, so there a substantial amount of cake.