I installed mine 2 years ago, and thankfully it went ok. I was so concerned about drilling into my trunk, that I must have measured 10 times, and as a final check, I had my wife look at it to see if it looks evenly spaced and straight to her. She is somewhat of a perfectionist, and if there was any noticeable flaw, she would have spotted it. I have seen some other brands on bikes, and I must say, the Yamaha ones look the best, In my humble opinion.
Dale