I've been conditioning since about my 5th batch and wouldn't even consider stopping, less dust, faster draining of the mash, higher efficiency. It is possible though to get your grain too damp, I have gummed up my JSP before. I power my mill with a 35 year old Milwaukee, 3.3 Amp, 1,000 RPM corded drill, which never game me any trouble until I bought a bag of Castle Pilsen, when I went to grind the batch, the mill completely bound up. I had to loosen the setting a bit, the kernels don't look that much bigger than any other malt, but that's all I can figure caused the problem. My only complaint with the JSP mill, other than the cheesy hopper is that the thumbscrews locking the gap setting sometimes come loose during use and the setting backs off while grinding, as happened last week.