i have two questions about my 99 t5... first, the sunroof works well, but rattles like no other whenever i'm driving it, is there a quick adjustment to this that would be a common fix, or do i have to take it in, or do some major work to get something tightened?

second, i bought it used at 60k miles, and the previous owner said that the serpentine (sp?) belt had been changed, but in the records that he gave me, it shows no such service....is there a way of checking this?
thanks