Coffee Appreciation

haven't been home longer than 3 days in a row or more than about 6 days a month since early feb so my coffee machine went a little uncared for and all of a sudden refused to pull a shot properly at all no matter what i tried but I ended up never having time to look at it.

finally got round to doing so today, full breakdown and clean of the external grouphead parts (bearing in mind the internals are all pretty much brand new atm after my service which went without a hitch) got every single bit of coffee oil and the like off the machine. descaled, re-calibrated the grinder back to factory settings. all stuff I've done numerous times before.

can I pull an even slightly viable shot. can i fuck.

doing 17g (bang on for my vst basket), distributed with an ona for evenness, same tamp as I always use, across the whole gamut of grind settings (super-fine to a bit low) and every. single. fucking. shot takes 2 seconds while the PF fills with water then dumps 20ml of coffee coloured piss through in under 3 more seconds. i might as well be putting the cup under a running tap., pucks are showing no signs of obvious channeling, no indent from overfilled basket, acceptable puck dryness/density. nothing I do brings the machine close to choking even with the grinder nearly screaming from being on it's finest setting without knackering it.

the only thing i've not tweaked is the coffee I'm using which is about 3 months old now so i'm sure it's not helping but i've had this issue for about 2.5 months so the coffee can't have been the initial issue.

checked the pump pressure and it's about 10.25bar so could be lower as far as opv modding goes but a lot less than the factory 12-14 bar.

asked the gf to pick up some beans on the way home if there's a coffee shop open but feeling super fucked of, because I just made over 15 coffees and haven't been able to drink a single one.

if fresh beans don't work I genuinely have no idea what to try next.