Had this tv for about a month now, great set overall but a few little problems thats are niggling away at me. Worst problem is when playing a region 1 DVD, to the upper right is several black lines that bend into the picture. Something to do with the NSTC picture? To the left there is a vertical green line about 1.5 inchs wide, but it can only be seen when watching the tv at a sharp angle. Can these be fixed by an engineer or are they a 'feature' of the set?