Occasionally, a customer will call us because their Baratza grinder isn't grinding finely enough for them to pull a great shot with their espresso machine. For the Encore or Virtuoso, there is a minor adjustment that can be made inside the machine which will reset the grinder to the finest possible setting. To assist folks in recalibrating their Baratza grinder, we filmed Gail going through the process outlined on Baratza's website.
However, please keep in mind that the Baratza Maestro and Maestro Plus don't grind fine enough for most espresso machines (unless you're using a pressurized portafilter), so no matter how much you adjust it, you're not going to be able to effectively use these grinders with your Rancilio Silvia or Rocket Cellini. These grinders are great options for folks that are interested in making superb french press or drip coffee, however, because while they don't go fine enough for espresso, they are incredibly consistent -- the particle size of your grounds will be uniform and result in improved flavor extraction.