Ahh, that was it. I think I'd read your writeup from when you made that modification to your car. I do like the idea of having the lines connect directly as you have instead of through the adapter blocks!
This pic shows how the lines route with my SD7 / type Q-something (QD?) cylinder head. With the OEM style SD5 they were farther up and kind of in the way.
IMAG1887.jpg