I've owned 3 or 4 of these brackets (on and off bikes) and IME, after 50 years they are all sort of tweaked. You cannot lay these on a surface plate and expect them not to rock. But that doesn't mean that your fairing won't sit straight.

As you mount the assembled "upper", simply push the 4 arms of the bracket back and forth until the fairing sits straight. 

I may have a spare if you need one. But like I said, it will be "straight", but not "perfect". 

I would think one could use straight edges, perhaps a carpenter's 90 angle rule, with a bit of messing to get things perfect.

Not knowing how far off yours is, I can't give a definite answer as to bending it back or bending it into shape.  The arms are not terribly hard to bend a little bit.    

My idea for now would be put the bike on the center stand, use the two main bolts and bolt the bracket to the steering head frame, and use a bubble level and tape measure to square things up and level.  The bracket is symmetric so from the center point of it, you can perhaps measure out to the tips.

LOL, have fun, good luck.  St.

One thing, move the bracket, the fiberglass fairing is less forgiving of misaligned brackets.  I have seen the inserts in the fairing pull out due to bent brackets.  The force of air on the fairing is fairly significant.   Get the bracket as darned close to perfect as you can, I guess I am writing.  Good luck. St.

Hey guys:

I did some fiddling with it and was able to get it even side to side using height from floor and width from centerline as my guide. Not sure yet if that mates up “perfectly” with the fairing. I just had some fairing repairs done and haven’t had the time yet to reinstall it. I’ll report back when I do. 

—bb

As long as you are not real far off of fitting, you should not have a problem.  Good luck and let us know how you make out. St.