Ok, just turned up by 720degs, 2 turns.
From the 15 to 20 feet from my garag door, makes a height difference of about 5 to 6 inches
As ive had 1 too many shandys this sunday lunchtime, i cant drive it to test real world results!
Took all of 30 seconds, and i can see, coupled with the extreme bulbs, this is one of the best mods to do.