Where did you get those fittingd from CUB_075? Looks very professional and neat. There is a lot to be said for clear nylon tubing. That is what Citroen have connecting the rear return hoses to the front of the vehicle. Then they bugger it up by using crappy rubber to complete the journey to the LHM reservoir.
John
They are a standard Enzed standard fitting. Parker-Legrand?
Any good supplier should have an equivalent fitting.