[Linked Image]
You can see the slotted rail just by the main hinge fixing, by your shoulder. There are two each side, but one is hidden in the photo, behind another stay. Adjusting these will move the whole hood rail back and forth.
( ignore the additional horizontal strap pointing rearwards; thats my homemade hood prop.)

Doug
2011 Plus 4 in Rich Maroon

1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900