Hmm, well I don't think squeal settles, only gets worse in my experience.
Obviously the guys re installed all the shims and things, maybe go through the bedding procedure again, and see what happens. Mechanics tend to be a little fast in the bedding and don't do it properly. If still bad, rip the pads out, clean, reassemble with gunk, and maybe file the pads.
My HPX are perfect on the stagea.