The banging is mostly caused from egged out mounting holes. I just cut a short piece of gas line & squeeze it in between the fork tube & the caliper.. (Don't laugh) this works well..I still have a piece in there since last set of pads were installed back in 02 & NO banging..
The squeaks, I grind a taper to the brake pads leading edges, & sand the pad surfaces (course grit) that usually fixes it..
Note: any brake pads may still contain asbestos & should be treated as so.. Wear a mask... We only get 1 set of lungs as oem.......