Gears problem??
 

So i just got my gears installed...4.10 with 7.5 posi!

What could have gone wrong during install? is there a way to install wrong that could tear out my rear end?

It might be cause their new but i feel like i here a rattling? they can' be broken but maybe im just imaging things?

A lot of things could have gone wrong, but if it's a big problem just take it back to the shop and tell them or if you did it yourself check again for damage.

okay i think i might just take it back for a check up!

If something was wrong...could i ruin more than just the posi and gears???

yes