Rear End help!

Wouldn't hurt to try some limited slip additive before you yank it apart. Just go to your local auto parts store and ask for limited slip additive. It's a pretty small bottle. O'Reilley's, Autozone, NAPA, all have it around me. Costs about $5-6 a bottle. If that don't do it you've got a spool or a Lincoln locker (welded spider gears)