I have the IS-TVHD30 and no manufacturers remote, and the aspect ration is way too big on my TV. I have a universal remote (RadioShack 6-in-1 Remote), but there is no "ZOOM" function, like mentoned in the manual. Is there any way to make my picture crisper by using the TV controls alone? Or, is there another remote code that can access the "ZOOM" function when it comes to remotes? Peoples' head are all cut off on my screen, and the picture quality is lousy. Please help.