The shaking occurs while driving but is worse at around 40-50 mph... not when braking. The pictures you see had the same test done to ensure the hub was centered and they are perfect. I will need to see from my installer if it is hub centric or lug centric as I am not sure what that means exactly. He did mention that he tried to perfectly center the wheels as the lugs do not go thru the wheel holes of my Cragers. I never had this problem with my drum brake system and the same wheels. Hoses, brackets, etc. all had to be modified to make this system fit/work. SSBC even had to make a castle nut because the one they provide didn't work. I do not know alot about this as I am sure you can see, but my guy has had his shop for 40 years and has owned about 30-40 Mopars so i didnt see this being an issue. I should have went with my gut and went with the bigger bolt pattern Willwood set up. He had used SSBC on many b-bodies in the past with no issues. Sick about this. Next step would be to go back to the old drum set up I guess.