During the first grinds, particles of the cleaner may remain behind, but this has no influence on the taste of your espresso, but the removed oily and possibly rancid coffee fits now guarantee a wonderfully fresh cappuccino or espresso genot.
These mills have a very fine grinding level setting, which means that you cannot turn the grinding degree of fine/espresso to coarse/filter coffee once 360 °, but several times 360 °. You will not get a medium grind if you only run 90 ° From fine/espresso to coarse!
It is better to turn further and further so that you reach a medium to coarse grinding, otherwise the mill will get hidden quickly.