If that was addressed to me about my “adjust coarser” remark above, then yup, coarser. But by barely a smidge.
It’s hard to be sure, to be honest, because it could be more to do with me not getting my tamp pressure cosistent enough, that being hard to do with my shoulder problems. Shot times can extend a bit, going from aroud the 30s mark, plus or minus maybe 2s, to 36, 38 even 40s (to get a pretty consistent 20g in, 40ml-ish out).
But if I’ve had several on the trot do that, and adjust a smidge coarser (from about 15.5 to 15.7, with the decimal point bits being estimated by eye, on the Niche ring) and the shot times come back to the original 30s-ish, pretty consistently, the only thing I can think of is it’s choking a bit at the first setting, and going a tad coarser seems to stop it.
But if I’m reading it wrong, I’d be happy to know what I’m missing.