I have to do some tweaking on my Tosh 50" RPTV, (50A61). The black bars in letterbox mode, 16:9 and 4:3, upper and lower are way off in the corners (bent) where they should meet the picture. I also notice any straight vertical lines on the left side of the screen are way out of wack (bent). I do not think Toshiba even try's to calibrate these RPTV's at all in the factory. If any one even looked at the picture for a split second in letterbox mode they would see it's way off instantly. My question is will I be able to make the proper adjustments using Avia only? Or will I have to get into the service menu to make the adjustments? I want to know before I go purchase the Avia DVD. I have no idea how to get into the service menu of the Tosh 50A61 so will I just be wasting my money buying Avia to make these adjustments? Thanks, Roy.