That's true. But as I mentioned in my om COBfession, I only mud the Morgan Nosewarmer. I've never felt the need to mud a cob as I always stop smoking the moment I taste the wooden shank. Many say that these burn away, but even my oldest, most smoked cob still has some shank left on the bottom. I've very sensitive to taste, so I notice immediately when the shank is starting to burn. Thanks for the mention. Scott
The tobacco is packed too lightly, perhaps, would be another reason. Especially with smoking a filtered pipe without using a filter. Since most of my cobs are filtered and I rarely use filters (though I tried them recently), I tend to pack them tighter than I would with an unfiltered pipe.
I'm late to this party, but I'll pitch in anyway. Cobs are great. Luckily I started with a cob and quickly noticed that they smoke better than briars in the 2-3 times more expensive range when I started trying briars. My most smoked pipe by far is a straight MM Legend that's had at least over 200 bowls go through it since I bought it this summer as a grab bag of smokable seconds. Cobs fill up just by being smoked and are just convenient. There is a reason why I'm getting rid of my briars and just ordered two more MM grab bags.