A quick update. With the help of some friendly washers, I have fitted the slightly too narrow Adv Mk2 prototype model to my bike and done the morning commute up the A3. This has also enabled me to confirm the measurements required for the Mk3 prototype which will be machined up next week.
Initial results are very very good. Not that I'm blowing my own trumpet here of course, but it made a lot of difference - smooth air, no buffeting. Quite spooky. It actually makes the bike 20mph faster as you can ride faster and not have a sore head.
The positioning is, as usual, quite sensitive. With the screen a bit too upright, the buffeting is as bad or worse. With it tilted back just 1 inch, it is vastly better.
Another thing I've found is that with the Tobinator risers in their lowest position, the sides of the Adv screen block access to the lower Tobinator fixing bolts. This means adjustment is a bit more complicated, as you need to remove the screen from the top adjusters (2 mins), then adjust the bottom of the Tobinator risers to where you want them to be, then refit the screen. All in all, this takes 5-6 mins, versus a couple of mins for the standard version.
The whole screen structure is very rigid as well. Some vigorous pulling and pushing doesn't dislodge the Tobinators or move the screen at all.
So, all looking good so far. I'll keep you posted.
Tobers