Greeesh......
Hi BBall.
Dissaemble your brakes by (A) keeping 'em on the hub (B) By removing the retaining pins (C) by removing the current front brake pads/shoes/discs. (D) Run your fingernail over the rotor facing the pads and check for any uneven surface to catch a fingernail, if so have the rotors 'turned' and if told not enough material to do so then just replace 'em. (E) Take the shims off and WD 'em. Find a chissel and scrape these shims to shinny bare metal. Note the direction they face to reinstall back on to the new brake pads you will be purchasing. (F) Put Liberal amounts of grease on the each side of the shims, espicially the sides facing the pistons. (G) Take a nail and carefully punch a hole into the rubber atop each piston on each caliper. (H) With your WD and its accompaning plastic straw you'll put the straw into these rubber holes ( very small ones...) and you'll release WD into the pistons in order to lubricate the pistons really well. (I) Take a large half-inch screwdriver and pry/push the pistons apart to get room to install your wider new brake pads. (J) Now simply re-install everything. Your pistons should not be hung up any longer if so before.....If rotors could catch a fingernail it was due to a frozen piston, brake squeals are from the same source of partially frozen piston resulting in very worn wear on generally only One pad at one caliper. The grease on the shims will prevent any further squeals .
Well hope you've had fun. Don't forget to bleed your brakes now. Goodluck. shane-