I bought a 134-302SA HP main body last December. Two of the boosters were loose. Sent it back. Ordered another last week. Boosters are tight. I finally had time to closely examine. There were two different size idle air bleeds. Called Holley. 16 minutes on hold. Tech contact verified bleed size was wrong. I had the correct bleeds in 2 days. Pretty good service. Pretty bad Q.C.