Okay, I am a believer in subjective observation. I WANT everything on my car to be perfectly aligned, forever. This morning, earlier than yesterday, I took before and after pics; in earlier, more slanting sunlight (i.e. stronger shadow definition). First pic is how the hood stoppers were before I fiddled, i.e. how I got the car over a year ago (unless they vibrate to different levels); this was left stopper mostly or all the way in; right stopper c. halfway out. The "after" pic is left stopper all the way out and right stopper all the way in.
If you can see any difference you have better eyes than mine! 
 
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