Jan 17, 2018 · Mahlkonig Guatemala Lab, Kenia burrs (aka EK10 burrs) in a K30. Grinders are one of the keys to exceptional espresso. Discuss them here. there have been small mentions of swapping the stock burrs of a K30 for the burrs of bulk grinders with same size burrs, namely the guatemala lab and kenia. I haven't found much by way of real world taste ...