Rifle tuning block smooths airflow TREMENDOUSLY w/ stock shield in nearly all positions on Gen Is.
Cheapo (and quite a bit less effective, but still helpful) route for Gen I only is to:
1. Remove plastic screws holding "W" onto windshield.
2. Watch the shield slip sideways onto mirror and bind up the last screw.
3. Cuss.
4. Unbind and remove last screw; pull off "W" and windshield.
5. Lay windshield on the nearest hard surface.
6. Remove two bolts holding windshield support to windshield motor arms.
7. Observe the spring-loaded arms and windshield support part ways in a surprising manner.
8. See step 3.
9. Put the allan-head bolts - that held the spring-loaded arms to the windshield support - in your pocket.
10. Go to your local hardware store.
11. Attempt to buy Teflon washers with the hole diameter that matches the allan head bolts in your pocket.
12. See step 3.
13. Go home, pull bolts out of pocket of grungy work shirt you changed out of before you went to the hardware store, return to store.
14. Buy (2) 5/16" or (2) 3/8" inch thick Teflon washers with about 3/4" - 1" external diameter and with a hole diameter slightly larger than the allan head bolts.
15. Look for 2 slightly (1/2" to 1 1/2") longer allan-head bolts w/ the same thread as the bolts you brought from home.
16. After 10 minutes, quit looking in the "Standard" bolt bin and find the bolts in the "Metric" bolt bin.
17. Buy the 2 longer allan-head bolts w/ the correct metric thread pattern.
18. Return home to bike.
19. Stick the Teflon washers (now known as 'spacers') between the spring-loaded arms and the windshield support.
20. Try to line up the new, longer bolts through the windshield support, spacers, and spring-loaded motor arms.
21. Cross thread the second bolt.
22. See step 3.
23. Replace windshield and "W". Note the fresh scratches on the former from Step 5.
24. See step 3.
25. Line up and install plastic screws.
26. Back off the 3 screws that are too tight so the last 2 screw holes, "W", and shield will line up.
27. Over-tighten and break off plastic screw(s) when doing your final-final double-check that all the screws are properly tightened.
28. See step 3.
29. Go to dealer and pay $1.14 for each replacement screw(s).
30. See step 3.
31. Use a thumbnail to unscrew first broken off plastic screw from the front of the bike.
32. Figure out the broken-off screw ends stick out 1/4" on the driver's side of the windshield. Easily remove other broken screws. Feel proud.
32. Apply new screws where needed.
33. Adjust screen and go for a test ride.
What the preceding procedure produced was a stock shield that provided fairly clean air in two positions - all the way down and at about 3/4 of the way up. A bit better than stock, not nearly as good as a tuning block. I still haven't found my ideal 'winter shield' setup.
Good luck,
RsvlFeej