I had the oddest burn issues with a cigar yesterday. It had been stored at 62% RH for awhile, so it wasn't too wet, but it just wouldn't stay lit!
Lately I've slowed down my draws to every 90 seconds or so, so when it went out the first time I relit it and sped up my draws to every minute or so. After it went out a second time I clipped the head (torpedo vitola) again, thinking maybe I needed more draw (although before clipping it again the draw was just fine to me). Again I kept a faster pace of about a minute.
Third time it went out I decided to just call it quits.