Hey guys- I'm having some trouble with a projector I just bought. Yesterday, I watched a game with the projector on what was probably a 5 foot screen. We were able to tell a slight, though noticeable uneven picture. The left side was larger than the right side. I went into my menu, to 'screen,' where I figured i'd be able to fix the issue and my only two options were 'true' & 'digital zoom.' How can I go about fixing this? Thanks!