After seeing an advertisement in a motorcycle magazine and checking out their web site, I decided to take the risk and purchase an extension screen from Bikescreens, a New Zealand based company that sells replacement screens for hundreds of different bikes.
Three options are available - clear, light tint and dark tint. I would strongly recommend the dark tint as it blends in with the existing bike the best and hides any adhesive used (see below).
Total cost was A$114 and delivery was made a day short of two weeks from date of order - ordered via email and paid for by credit card.
The screen comes with two pre-drilled holes on each side (A and B in Figure 1) and nothing else. However, because the screen is an extension screen and therefore doesn't replace an existing screen, its actual placement is up to you (and the shape of the screen!).
Originally, I was going to fit the screen level with the top of the headlight. However, the shape of the screen didn't match the shape of the existing fairing so I moved it up to just above the air slot above the headlight (C in Figure 1). The advantage is now the screen is higher and gives greater protection to the body. The disadvantages are the top screen holes are useless (A in Figure 1) as they are higher than the existing fairing (filled in with black plastic grommets) and greater air pressure is placed on the existing fairing which *could* result in fractures around either side of the instruments (F in Figure 2) in the long term - hopefully not, but time will tell.
Two holes were drilled in the existing fairing (using drill bits with the cutting edges filed down) and two large self-tapping bolts with washers were used (not supplied). To give greater support to the screen, windscreen adhesive was used along the top of the existing fairing (D in Figure 2). If I was fitting another screen I would also add the adhesive along the bottom of the new screen.
Another problem, which wasn't discovered until the screen was fitted, is that the mirror stem/brake reservoir catch the screen when the handlebars are on full lock - not a major problem, and one that could be easily by overcome by cutting the corner off the screen (E in Figure 2), or mounting the screen even higher??!!
Overall, I am very happy with the end result - I have to be! I doubt if I could remove the screen without making a mess of the existing fairing!
I would have preferred the screen come with some instructions - particularly, where exactly was the screen supposed to be attached, but as I said earlier, the shape of the screen didn't match the shape of the fairing if you wanted to mount it lower (just above the headlight).
If you require any further information please either contact myself or Herewini Tere at Bikescreens.