they are really thin and quite large for the size of their hole.
definately one on each brake boss before you slide the brake onto the frame.
The bolts have a slight flat edge to them too which sort of seats quite nicely/ covers the bearing a little when you bolt them on. Slide them on carefully too as they can flex and twist fairly easily and the nut that does the arch up and undoes it (by hand) isn't that strong.
Only other thing to watch is that the wire retension wires behind the brake don't get caught on the tyre knobbles when you undo them and wheel the bike anywhere as they mis shape wuite easily if so and do tend to get caught when it's all undone.
but excellent brakes none the less. Almost the best V's ever IMO, but Ultimates are more powerful by a touch.
I'll bring it in tomorrow and scan it and email you it. Or I can pop a photocopy in the post if you pm me your address (probably better as it's quite small print etc.)