instructions
black washer in wrong place
We got one and this is the first time with such things. It talks of using two washers but only supplies one. And the one they supply if used on either of the ends wouldn't all the screw down thing to screw down so that couldn't be what it is for.
So - where/how to use the black washer they supply?
where/what washers to complete a watertight fitting with these things?