Hello ford mods people.Hope you had a good christmas.I put on some new dba slotted front rotors,bendix ultimate pads and wheel bearings in and now it has the best brakes ive had.Problem i have got is that same day i had to brake really hard(locked it up) because a F***wit pulled out in front of me.Now i have the occasional vibrating-grinding sound coming from the left rotor.Damaged brake pad maybe?I know you are supposed to avoid any heavy braking so the pads can wear in but either i locked it up or my car would be in the smash repairs again!thanks in advance

hmm could have glazed the disc maybe..in that case it may have to be machined maybe

Are the pistons free to move in the calipers? Are the caliper slide pins easy to move with your fingers? Did you change your brake fluid at the same time too?
Did you correctly reset the park brake on the calipers?
All this needs to be looked at, to eliminate any problems.