(Really weird hum) Some more questions after full maintenance on new to me SQ5

[Robvoip]

Enjoying the new daily so far. I did the full works on maintenance:
Zf8 filter/oil change
New plugs
New engine oil
New diff oil
Supercharger fluid
New belt
New brakes
Tires
PCV (elbow and clip) replacement

When I got the car, I barely drove it. So I don't recall how it drove prior the maintenance, but two issues I've noticed.

The zf8(or something else), sometimes clunks when coming stop. This is my second zf8 (had a b9 s4 previously) I don't remember if it had these infrequent clunks. I don't believe it's low transmission oil (I had that issue on my a4, and it drove poorly all the time until toped up) is this just the way the zf8 performs on a b8 sq5?

The car has a nasty hum coming from the back, it doesnt change frequency when sweeving left or right, so I'm worried it could be diff related amd not wheel bearing (or cupped tires)

Here is a vid, I hope it comes through (you hear it quite well half way through the video)



Any help would be appreciated before I head back to the garage.

[Northern_B6]

I experienced the same zf8 related "clunk-at-stop" when my Q5 was new to me.

The 034 Billet Aluminum Transmission insert will certainly help cure that problem

[Robvoip]

The hum seems to be wheel bearing related, getting it fixed this week. I'll look into the transmission insert, the clunk happens so random I can't even replicate it consistently.