Burrs: They look like very normal steel 64mm burrs, but the design is some kind of special (design I often see on SSP reds), and the design is clearly something that affect the grind quality a lot on this grinder. The initial alignment was near perfect: in fact, I didn't touch anything and decided to inspect/adjust after the break in period. On demand modes: This is something huge on this grinder. The fork button is...present ? Lol. You push the button associated to the single/double dose with the allowed time you programmed for it, insert the portafilter and start the grinding process. You can remove the portafilter, level a bit and put it back to resume the grinding process, and the delay before cancelling the dosing process is programmable. I've found +/- 0.5g differences using this mode. Or, you can select to cancel the fork button, and to initiate the grinding process by pushing on the single/double dose button. If you select this mode, interruption is not possible (you can ...