Solis Maestro in Coffee & Tea Posted February 12, 2008 Thanks for the ideas. I did a quick look around coffeegeek but didn't find anything. Barratza replied this morning, but suggested I'd gotten coffee grounds wedged beneath the lower burr. I don't think that's possible given that I'd never taken the lower burr off before. But they are sending me some washers to compensate for the poor performance.