That's interesting because my NVH does not move and I have never had any banging, etc. are there different ways the NVH is attached?
It could have been improved compared to the video. The main vertical bolts couldn't be tightened fully due to the threads being damaged from the movement but a couple of washers could of helped clamp it down better.
The horizontal bolts weren't doing a lot as the two plates they pass through either side of the bevel box were to far apart to allow them to bolt up tight on the mount.
Some packing here would improved things but how long before it all started to bend and come loose again🤔