Worked great. Didn't hit them. Most problems with the spacers are over tightening and tearing no problems. I have them after 500 miles tested and they weren't loose or cracked I've had them for about 1000 miles will continue to check them regularly 8/7/2020: No problems so far, I've put over 15,000 miles on them Just check them when you change the oil and be sure to use a torque wrench, to tighten them.