Hi GreyBeard
Still trying to sort my similar problem on the A7, which has a newish reflector. The halogens did not work for me. they where a little better but not much, standard bulbs just seam to cast a glow on the road and disappear when someone appears behind you. I have been swapping the A10 setup over which is better with the standard bulbs then with the halogens but still not good (old original reflector) .
So where did you source the 40/45 bulb, I assume its is a BPF bulb still. I can only find a single supplier on ebay, as your works would prefer to get from someone known.