Changed the headlamp bulb on the 1100 sport for a Philips xtreme power 100% more light allegedly, couldn't see diddly as it was on an unlit road so it can't be worse.
What a fiddly job, took me 40 mins, need the hands of a child to get in amongst the fairing struts, wiring, cables etc...
There is a rumour that they don't last long..........we'll see.