Due to family circumstances had to leave my P20000 shut down for 5/6 months - completely unused.
Started it up yesterday:
agitated all the carts > 'power clean' > nozzle check: all but two ok
second power clean on those > all good
printed some images just fine.
delighted/surprised by this!
Epson indeed seem to have improved their heads a lot, from my past experience! (had various models for 20 years now)