re-ar drum modle/front disks r reg 2.4 petrol/so how easy r front pads to take out r they the like old type with pins and split pins do they have bolts that the calipers slide on do they have anti rattle shims,got noisey brakes need to strip down.on the rear drums do you have to remove centre nut to remove drums,is it a castle nut or one off the ones you smack with chisel to stop iy unwinding