Hi group: I've an inexpensive (and old) meer lined briar with the only marking "Italy" on the shank. The stem has 2 very small holes in place of a slot, and the tenon opening isn't great. In fact, I can only get a very thin pipe cleaner through the lip end and even a tapered pc won't go right through. It's not a bad smoker, but I'm wondering if it's possible/practical to open up the tip a bit? Thoughts appreciated!