I've been trying to build cake in the bottom of my pipe by only smoking half bowls or 1/4 bowls using Carter Hall mostly. No matter how I fill the pipe or how I smoke it it still gets moist and gurgles pretty fast. I leave pipe cleaners in it to soak up some moisture when I'm finished, but no matter how long I let the pipe rest it still instantly becomes moist. So because of this, the bottom of my bowl isn't building cake... but the top has some pretty nice cake from smoking random full bowls. Is it the way my pipe is built or am I just doing something totally wrong here?