I've noticed in the last 3 days slight vibration on the brake pedal when I brake only at low speeds and when slowly coming to a stop like when I barely keep my foot on the brake. I only have 3k miles on it and hoping I didn't mess something up when I installed the amp steps. The instructions said to intall remote by master cylinder. Could I have hit it and messed it up or could it be something else? I'm about to lift it and dont want them not to fix it blamming it on the lift. Is it the abs coming on b/c of aftermarket rims and tires even though I had the same rims / tires on my 07? I shouldn't have warp rotors at 3k miles. Any other suggestions?