Current gearset is a 4.10.
I don't have any howling or whining coming out of the rear end. I do get clunking going up into my driveway. It's much worse when out of gear. We did check for wobble and fore/back at the flange and were unable to detect any. The driveshaft was in during these tests. Not sure if that matters.
I am trying to get an idea if the amount of slop I'm seeing here is acceptable or if the cover has to come off for inspection. If it does I will have to take it to someone who knows what they are doing.