I was switching over water tanks under the sink this morning and found water on the floor,, a quick pressure test confirmed it was coming out of the pump halves but only at full stop pressure,, not having anything to do with water pumps, but some with gaskets, I was reluctant to just tighten the 12 screws holding the two pump halves together, (sometimes all this does is deform gaskets). they all took up half a turn and the water leak stopped.

Impending doom or just old age do you reckon?