I can't emphasize this one enough. Early on, I was prone to packing the bowls WAY too tight. The result was me getting frustrated and putting flame to the tobacco every .5 seconds. CH is the perfect blend to start with though. It's very forgiving.\n\nThat's always a good rule to follow, except that I don't often use filters in my cobs so I pack a bit tighter. The draw should be the same though either way, nice and free.