I have a question about the picture quality on my LD players. The player I've has for some time is a Panasonic CLD-503. I recently picked up a Theta Data II intending to use it primarily as a dedicated CD transport with the added bonus of playing LD. I really only watch Raiders and Star Wars on LD, having replaced most of my collection with DVD. The Theta doesn't have as good picture quality as the 503. It appears more grainy and on black images has a wavy vertical pattern in the background. Is this just the quality I can expect or does this thing need adjustment / service? Any input appreciated.