Thank you for your comments, input and encouragement.
I can see now that my photos were taken at the angle from which it is hard to tell what is going on. I?m posting couple more, so you guys have a better idea how the bracket is located in relation to the windscreen and clocks.
I set the angle of the plate to face the chest rather than the face of the rider. That should reduce the glare on the GPS screen. Even though I used only two screws to fix the GPS mount to the windscreen brackets, the whole structure is very rigid because of the two solid aluminum posts that are elongated. I used only two screws because I didn?t want to restrict adjustment of the windscreen. The mounting plate is flush with the bike clocks. At that position, the GPS unit that is 4? (10 cm) high can be mounted directly to the surface of the plate. I could make the posts shorter by 0.5? (12 mm). That would bring the plate to be 0.25? (6 mm) from the screen. That would also reduce maximum height of the GPS unit that could be attached directly to the plate to 3.25? (8.2 cm). I think that I found happy medium, but I?m always open to new suggestions.
I wonder if any of you guys could send me the hole pattern and the hole diameters for TomTom Rider or Garmin Zumo or both.
This way I could drill them all in one time and save you some effort.
I think I?m done for today.