Hi Kirsty,
Yes that makes sense, for the eventual tightening of both?... its quite tricky and i should have slowed down and took my time,
anyway, i have set the ro-unit up with all 3 filters using a small piece of the thin tubing to connect two of the housings together, it has a slight leak, so its outside lol, but its filling my tank, i just hope its pure in the morning,
as i said previously, my inline tds is broken, we have had building work and a new kitchen so everything is piled in the garage, and my good lass indoors has not got a clue where she put my hand held tds meter
so im working blind at the moment, guess what my next purchase is ?
Thanks very much for the spare part, really good of you.
Gary.