Fraying of a new serpentine belt is not "normal", it indicates a poor quality belt. Strands circulating around the engine at high speed could grab hold of anything and cause damage. Either have Ford replace or buy a high quality belt, I never liked Ford belts. Best of luck and yea I'd be really pissed if my $60k car had this wrong.
AirRaid CAI, FRPP lca's, Sequential tails, BBK headers & catted x-pipe, Hot Rod Cams, FRPP axle-backs, MGW shifter, 20" bullets, Bama Tune, Eibach Pro Susp Pkg.