Finally getting around to changing the differential out, got all the bolts out, got the half shafts out, can't get the damn thing to budge, not even a little bit, any tips or tricks?

 

never mind, it was black sealant finally came out, doesn't look any different than the one i got on ebay except the one on ebay has a different nut on the pinion, so i guess its been changed or the bearing has, which is what i think is wrong with the old one since it wasn't the hubs roaring