So the b41 version works, I can plumb things from any height level and it does work. However 2 things are the problem - 1) the washing machine doesn't work unless I relog, and the container source after relogging will become bugged and infinite water (ie forever 10/800) until it's manually destroyed by melee. This isn't really an issue, I guess, immersion breaking sure but is fine.

The main problem 2) is that the other sinks and taps don't show up as plumbed for other players if it's more than the vanilla 1 story high (all our normal 1 level high plumbing is ok) and any thing that was plumbed using multi-story sources unplumbs itself/no longer is drinkable etc. after coming back/reloading the game.

i doubt it is still being maintained for b41, but just posting in case anyone else has issue. the only other plumbing related mod i have is plumb helper plus (which works, but just doesn't show anything for 2+ stories high as one would expect).