If they squeal again, just coat the brake rotors and pads in household oil. Should take care of it for good. If that doesn't take care of the problem, just wait until the very last second, then stand on the brakes at speed. Squeal should go away.Thanks all, I will be chattering and Fred Flinstoning at the stops!
I chamfered the leading edge of the rear pads after abrading them on concrete, then scratched up rotors with sand paper & lubed pin & back of pads.
Squeal is gone for now!