Modifications to the Givi instructions:
1) I used the US turn Signal pods in place of the Givi spacer to attach the upright bracket to the bottom of the brake master cylinder. Those pods have a stem that is 5 to 6 mm shorter than the Givi Spacer. The pod stem has a tab that aligns the turn signal to the master cylinder. Thus a spacer can not be used between the top of the stem and bottom of the master cylinder.
2) I installed the windshield to the left and right upright brackets. I snugged those fasteners down but with just a tad free movement. All the other fasteners were left lose. Then I tugged, twisted, slid and otherwise manhandled the windshield into what seemed the best alignment. Then I tightened all fasteners in place.
Repeat step 2 as required ....
I still need to go back and make some fine adjustments and lock-tite (blue) everything into place. The windshield is a a bit taller than I had hoped. The seems to be just a bit higher than my helmet. I may go back later and trim 150 to 250
inches mm off the top. I am not overly impressed with Givi's solution for the mirror mounts. I will post high res pictures to my web site later today. This old fart needs to take his morning nap.
Update:high res photos now posted
https://www.keywild.com/scooter/Kymco150i/Windshield/The "other" sub-folder contains additional raw images that I have not processed.