All, I've been roasting a few years and have always had very positive results. I'd actually started thinking it was really pretty difficult to screw up as no matter what I did, the end result was typically quite good. My last purchase was the expresso double sampler and my first couple roasts were just awesome. However my last 15 or so roasts have been extremely bright and almost sour. Not really so good at all. I roast just into the second crack and use a tecnivorm or aeropress to brew. I don't do expresso, just thought the expresso sampler would provide bolder flavor. I realize I'm not providing much for technical details, but my point is that things have been really good until recently, and now seem to be consistently not good. It appears my bean choice may have brought an end to a good thing. Possible? Thanks, John Get back to school stuff for them and cashback for you.