Lars
Looks like you've got it covered, but to build on Randy's comments re the documentation value of this thread, here are some pics 'n stuff.
Box Mount
If it's not obvious, that is the original 40 yr old bungee -- for however long it lasts.
Mine leaked from cracks around the bulls-eye (below). I cleaned it up as best I could on the inside, and dropped in a puddle of POR-15. So far so good.
The tubing is Tygon 5/16 & 1/2 inch i.d. from McMaster-Carr. I haven't been able to find a clear alternative. Please post here if anyone knows of one -- I'd like to get rid of the yellow.
The small dark cylinder in the bigger tube entering the box is a check valve. Not part of the original setup, but it lets me sleep better when inverted.
