Looking for some Differential advice

72DartGuy said
No. I haven’t taken it apart. I’ve been working on it from the top down. I’m finally done with the interior and wiring

Lots of vids on you tube how to check without pulling the cover. I sure wouldn't pull the cover just for curiosity. Just a little harder to do with an open rear, but if you've got a floor jack, you could check in about ten minutes