This weekend I swapped out all 16 plugs for some Pulstar Platinum plugs. Then I installed new pads and rotors. When I left to go home I had a banging/knocking type noise from the left side when braking. So yesterday, I removed the brakes and checked for issues, cleaned the surface of the hub, lubed the pads and re-installed everything. Noise was still there, so took everything apart again and checked for anything wrong. Still had the noise. So I gave up and went to bed the pads and that solved whatever issue they had, noise is gone. Wish I hadn't wasted hours removing and re-installing twice, but whatever, lol.