Suppose this is slightly off topic but hope someone can help. I have finally got this thing working in 5.1 SACD properly (used to have no .1 - just realised if you crank the setting up to +10 it works!) it's started mistracking / stuttering on discs. DVD's seem to be fine. I put in NIN downward spiral SACD and it keeps stuttering / getting stuck. At one point it said the disc was dirty when it looks clean as a whistle to me.... When you put the disc in it does pick the contents up. I am wondering if the lens needs cleaning.. or maybe the player is faulty? It has spent it's life in a smoky front room with numerous film sessions with loads of people round so it wouldn't shock me if the lens is horribly dirty. And then there's partys..... If it's a dirty lens anyone know of a decent lens cleaner?? Thanks in advance.