I bought a used Cereal Killer grain mill about 15 months ago. It worked OK at first but lately it has been acting up. The roller just spins but doesn't grab grain so nothing happens. I cleaned it thoroughly and it helped a little but that didn't last long, so I'm in the market for a new mill. I was thinking about the Barely Crusher because of their lifetime warranty but maybe the Monster Mill MM2 might be better. I read that there has been problems with Barely Crushers customer service. Which mill do you think I should get?