I have to aggree - the 18g basket gives very consistent results, and I think its much easier to get a good shot with than the 7g. The 7g seems to give very poor results on the same grind and tamp I use for the 18g, I suspect I would have to recalibrate my grind to get a good single. Good advice on the pump pressure and valve on the Silvia, thanks - now all I have to worry about with the 21g is my own pump
and the fact that I might not sleep for 24hrs.
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