Just did my first all grain batch yesterday. I tried for a SN Tumbler type beer with a recipe I found here. I missed my mash temp by a few degrees (it said to mash at 154, and I was at about 151), and the OG came out a little low (1.046, supposed to be 1.052), but it was a lot easier than I thought it would be. I forgot the whirfloc too, and so I'm hoping most of the sediment will settle out. Can't wait to try it in about 6 weeks!