Cuprajake Not touched it from factory in 6 months - but then I find that I have more than enough parameters to play with between temperatures, grind, dose and ratio.
Sometimes, when grinding coffees that go so fine that I get grinder stall or lumpiness, I wish I could decrease the pre-infusion pressure easily, as that may help. However, even in those cases I have seldom needed to throw away shots (which may well be a sign of a non-discriminating palate…).
