I just realized I did not really answer the OP's original question. The only pipe in my possession( other than 3 Meers) that has an issue is my Michael Butera Apple. The tenon shrunk and the stem is loose. I am going to have a custom made Ebonite stem made from SMS high quality German Ebonite for the pipe.
I will keep the original stem if I were to ever sell it which is highly unlikely as the pipe smokes freaking great. I have smoked nothing but Astleys no 44 Dark Flake and Wessex Brigade Campaign Dark Flake in it. I have the perfect amount of cake in it although in the next 6 months or so if I get it fixed, it will need a reaming.
I have owned this pipe since 2012. It is the most I have paid for an estate pipe(355.00). I won an auction from coopersark and it was a good deal as Mike's pipes generally go for 500.00 plus on the state market.