Just as the title says. Not sure where to begin. It was all fairly easy and straight forward, but now got a bad vibration starting around 30mph. I took it it up to 50 and it smoothed out a bit, but it's parked for now. I got both discs from Rockauto and they had the OEM part # on them. When I first noticed the vibration I put it back on the lift removed and checked all the bolts reinstalled with no change...