I’ve had this issue especially with narrow bowl pipes: toward to bottom of the bowl, the tobacco is packed tight, but I am still getting the sound of air through the stem and there is no pressure to the draw. I think this could be related to tobacco that is too moist, but also to the nature of a narrow bowl. Basically, I think as I’m tamping throughout the smoke, the moist tobacco is clumping up unevenly. So even though the tobacco is packed tight, there might still be a portion through which there is a gap. So in effect, you have too tight and what seems like too loose, but which is really just a hole or gap in your tobacco. As others write on several forum posts, they will stir or break up tobacco with the pick portion of their tool, especially at the bottom of the bowl. (So this is obviously a common issue.) I often find that stirring the tight plug at the bottom toward the end of a smoke releases much moisture and when I light after stirring I actually get a ton of flavor. (I usually try to dump ash before doing this to avoid mixing ash with unburnt tobacco, and getting a mouth full of ash. You have to be careful because you can end up dumping the entire last bit of plug as well.) Again, I think this is a moisture issue and/or a clumping issue due to moisture. Any feedback will be appreciated.