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 to the granite grinders. I have not changed any aspect of the way I am processing the chocolate. I have also experimented using different brands of sugar - the same problem occurs.

Here is a set by step as to what my process is like - 1. I add melted cacao paste to grinder 2. Add melted cacao butter 3. Add vanilla bean & salt ( I let this mix together for about an hour before I start to add the sugar) 4. Slowly add the sugar, 1 tablespoon every hour.

I would really appreciate any advice you can give me! Thank you!

~ Jade