This is for an NC1 but shouldn't be that much different to later model NCs
Note that the pictures are off the left headlight but the adjustments are the same on both lights (just mirror the locations of the adjusters).
When adjusting them, take small steps and note how far you went that way you can go back if you need to.
Up and Down should be the only adjustments needed.
To adjust them you need to stick a phillips screwdriver down the side of it (in the white shroud for up and down)
Note that when you turn it clockwise with the screwdriver, you are actually turning it anti clockwise on the wheel.
I have heard of people removing the white shroud and turning it with either a spanner or a ratchet for the up and down aim but I find it's easy enough to use a screwdriver because you don't need to turn it that much to move it.
Up and Down Adjustment
In and Out Adjustment
