Guys, my brakes are making a grinding noise sometimes when you stop. I took the the expedition to the Firestong place because the tires needed rotating and the guy told me I was 90% wore all the way around. I bought the truck used with 23k on it and it now has 52k. Is this something I can replace and are there any writeups on how to replace the pads. I was quoted over 400 from the dealer and I have found another place that will put NAPA cermic on the from and rear for like 250.00 installed. Thanks!!!!!!