UPDATE: My concern about the drilling was for naught. I just finished an inaugural bowl of Irish Flake and the pipe performed exceptionally well. It smoked cool and dry all the way down to the bottom with only the very slightest bit of gurgle towards the end. Hands down one of the best smoking pipes I own and I've only had one bowl. Plus, she's a beaut! Kudos again to TobaccoPipes for their stellar service and attention.