I would also add that the main screws that hold the dashboard to the bulkhead are loose.
If you remove the side covers that get hidden when the front doors are closed, then there are 2 fixings each side that work themselves free over time and cause a rattle.Posidrive if I recall.
there was a VW brief about this years ago. Also there's also a fix for the top dash rattle, underneath the air diffuser , where if you wedge a small wedge under the diffuser housing, it stops the dash from creaking. Again a brief or fix was on ukmkiv's website if I recall.
Both the above issues still to this day in my 2007 have zero rattles to date