I have a white knight wk447 dryer which bangs when spinning.i ?

They don't tighten they are riveted on to the drum so if there are now big holes in the drum and loose you need to strip drum out and put a stainless washer with a new rivet in place of the 3 already in there.This tends to be a temporary fix.Another way is to replace the whole drum but costly or replace whole thing

ck
February 2012