[mi000ke]

I recall reading somewhere that because the gases released from the cigar as it burns rise upward, it cuts oxygen to the top side slowing the burn on top, so putting the slow side down may help. I'm not sure if the science is correct or not, but turning the slow side down usually works for me - or hitting it with a torch if it gets too bad. Also I try to keep rotating the cigar just to make sure it burns evenly.