Having spent the sum total of 9 hours trying to fix, first the flush mechanism, then having to replace all of the interior gubbins in the cistern, (due to the long-encrusted seals being now broken, plus the modern fittings are all cheap, nasty plastic that doesn't quite match the old stuff) then having to refit the, "doughnut," washer three times. It came to mind that the design of toilets and plumbing in general is utter crap. No pun intended.
Surely in the 21st century there should be a more elegant & simple solution. Anyone? Please?!!
8 hours ago