I had some slight screeching metallic brake pad noisees, so since I thought it's quite a while since I changed brake pads, I thought I'd swap new ones in.
My mechanic apparently ordered the original ones, but initially, there was some kind of dull "dub dub dub" when I apply the brakes at slow speeds. I think he then "skimmed" something, but now, there is this sandy scruffy noise... My friend said he may have used old hardened original pads (my ride is a galant).
What can I do?