Yea I think Dell has gone downhill these past few years.
I only found out that Dell had installed thousands of incorrectly made Chinese Foxconn CPU coolers in XPS Gen series for over a year after I got it.
So they didn't notice this? If you see the pictures side by side its easy to notice.
Or did they do a Mattel and try to hide it?
They did not publicize it and kept it quiet.
They did learn and do the right thing for the Motherboard replacement on the XPS 700 series.
Since you're out of warranty, I've heard installing large fat rubber bands can absorb the noise. Also some have removed the rails and used that spongy double sided tape to hold the hard drives, or CD burners in place. But then of course don't throw it around or move it with just tape or rubber bands. But if its stuck on a desktop it can quiet the noise.