i've got a copy of dukes.....unrated, and it no longer plays very good. about half way through the movie, it starts to hang, freeze, jump, and become pixelated. it use to play great. i have ran it through nero to check the surface condition of the disc, etc. and nero says it is fine. by the way it is a sony dvd-r 1x-8x. is there a way to recopy this disc, either thru isobuster,dvdfab,Vobblanker,shrink, or nero. those are the only software i have. and if so, how will the quality improve, if at all. OR is this an exercise in futility. any help is greatly appreciated.