96 TT Trans issue. Started as a slight vibration cruising in 5th then started hearing slight ticking noise. Now 3rd gear rattles like nuts and bolts in an empty case. Car drives and shifts fine. Main question is, are first third and fifth all on the same shaft inside the trans? Reason for that is noise doesn't happen in 2nd or 4th. Just happened so I've torn nothing down yet. Thanx