Good day. I got the grinder today and tried it out. I can't turn the wheel to the finest setting. And the coffee is far too coarse, even though I tried to get the best out of it with the fine settings. Now the grinder is grinding and the coffee is still too coarse. And on top of that, the machine makes a huge mess. The powder comes flying out the bottom. Sorry, this is supposed to be a test winner? What should I do now? Many greetings: Kobler Jean-Michel