I just inherited a M4D C83 digital doserless grinder (serial070708792, not sure where the deceased bought it) that had been used for a little while and then set aside for a year (some old beans were still in grinder). The literature that came with it does not tell me how to clean the inside. I want to wash the inside of the dirty bean tub with hot soapy water, and I also want to make sure the burrs are clean (that they are not oily). How do I take off the bean tub? When I do it, does that give me access to the burrs so I clean them with a soft brush? Is that a good way to clean the burrs, or should I remove the grinder ring, take out the burrs, and wash them with hot water? If I remove the grinder ring, will I upset the machine’s settings? If I do, how do I reset it?