Share 'Cocoa Town Melanger - Sugar sticking to granite grinders'

Hello! I Have been using a Cocoa Town Melanger for a few months now, to produce cacao paste and grind coconut sugar with chocolate. I am having issues with the sugar sicking to the stone grinders. Does anyone have any experience & suggestions as to why this is occurring? The strange fact is that my machine was producing perfect chocolate for about 2 weeks and then the sugar started sticking t…