Sunday was my 4th smoke using my Masterbuilt XL. First three turned out pretty good for a rookie. This time I cooked chicken quarters, a rack of baby backs and a rack of beef ribs. The ribs ended up with a bitter taste this time. I don't know if I am making too much smoke or not. I added some cherry chunks this time to the pecan that I have been using for the first 3 smokes. I am using a 10" cast iron pan and wood chunks. How many chunks are you guys using at a time? I don't seem to get the thin blue smoke that everybody wants. The cherry I was using is from a wild cherry tree and I did not use any bark. The wood was cut a year ago so I know it was not green. Thanks.