hello truck people

[willefixit]

i have three trucks 58 chevy appache,1990 ford f250plow truck,1999 dodge ram sport 1500 quad cab. the dodge is under going a service out in the drive way. do all my ownd work been a mechanic for to long. found parts in the rear diff housing??? help whaats the fix ? its a 9.2 anti spin diff according to the under hood sticker.no previous noise just doing a service. had other rears apart before never came across this one till last night. thanks in advance willefixit ps should have said loose part in carrier housing two silver half pipe dealies ?? they are loose as **** apear to be making a wear pattern on the right brg cap. teardropped shaped penny sized piece of metal alsofound stuck to the magnet someone must have had this problem before thanks willefixit