It’s been a niggling issue ever since I had the car and even after fitting a new arm I just can’t seem to get the jets to cover the glass properly to get a clean sweep. They either miss the screen or hit too Nr the arm pivot. Any tips or special setup procedures ? 2012 TDV8 Vogue (L322)

As it happens I had to do mine yesterday after taking the tailgate apart to clean everything through, as it had become completely blocked.

They started out spraying into the air completely off the screen... I found realigning them to where I wanted needed quite a strong needle and forceful pushing (more than I expected) to get them back to the right angle - took a few attempts of walking forwards to the wheel to test, coming back again to tweak. I didn't do anything clever!

Mine certainly hits on the upper half of the blade, but from memory that's how it's always been, so I'm pretty happy.

An easy way that I have used involves using a large syringe filled with water.
Connect to the pipe, close the top window and squirt, adjust, and squirt again until you are happy.