I have had my Samsung HLR6167 for a while now. EVerything has been working great. However I noticed that the vertical adjustment is off, i.e. the picture is not centered on the vertical and is lower at the bottom. Ive seen this using the THX optimizer as well as watching 2:35 aspect ratio movies(you can see thicker bars at the top than the bottom). Also some import movies with embedded sub-titles get cut off making them unreadable. I know how to access the service menu- though I just use it to check lamp life(dont want to screw anything up- already know that much). Does anyone know I can adjust this setting? Without making a service call?