The Cobbit Shire came with a very comfortable vulcanite stem. I loved this pipe immediately. It loaded up very easily with a nice decent sized chamber.
But, back to the stem. Upon first inspection, I put my hands on stem and shank to check the innards and do a complete inspection, but I found that with quite a lot of force, this stem wasn't budging.
Here's a long story short.
If you get a Cobbit and look at where the stem goes into the shank, look for little 'ribs' of what I'll call excess material. It appears (if you have it) on the opposing sides of the stem and looks like excess material from molding the stem. I'm guessing some kind of two piece mold. Anyway...twisting the stem to remove it is folly.
Better to gently wiggle the stem up and down and try to work it out..and if it's still resistant, a little candle heat will help.
I learned the hard way, but when I told Marilyn about my experience, she sent me another stem.
Yes Shire!
There are cobs that accept filters, and cobs that don't. You seem to get a different draw if you use the filter ones w/o a filter. Cobbits don't have filters. Their draw is quite smooth and easy.