Peter,
I think it is always a case of hearing a rattle / vibration, searching, finding and solving only to hear another one that was masked by the original!!!!!!!!
I now have a similar noise to what you describe at about 60Kph in second gear coming from behind the dash on the drivers side, which I'm sure I'll find and solve only to hear another - keeps me fiddling and fettling, which I suppose is why I like doing it!!!!
Cheers!
