I recently purchased a 2013 GS 350 with the Mark Levinson audio system. For 2 of the 3 DVD-Audio disks I tested, it would only play about 5 seconds of a track and then skip back to the beginning of the track. It does this for every track of the disk. It seems to play regular DVDs and CDs fine. The DVD-Audio disks play fine on my home system. They played fine in my 2006 GS Mark Levinson system. So I don't think the problem is with the disks. Has anybody else had this issue?