I have a load of corn gluten feed thats has been getting hot spots. I found it smoldering a couple weeks ago so I turned it several times over 2 days and seemed to do the trick. But found it hot again this evening. This will only the 2nd time I've fed it. When it was delivered, I noticed this load had more moisture than the load last fall. I guess its was in the barn about 6 weeks before I notice it getting hot. Edges of bins are not getting hot. Only in the middle. Its been raining everyday all summer but its well covered. Hopefully we'll get some lower humidity soon.