I have a Samsung HP-S5053. I'm trying to deal with the black side bars in 4:3 ratio. I'm starting to see very faint image rentention from these bars. I would like to change the bars from black to grey, in order to help with this. I have read other threads on another samsung model, where you can turn the TV off, press menu, and stretch the 4:3. Does anyone know if I can do that on this model? Thanks!