Hi. Recently purchased this TV and i am delighted with it. However, i have noticed over the last couple of days a small problem that you may be able to help me with. The problem is only apparent when the end titles are scrolling up the screen (both normal TV broadcasts and DVD) or when the camera pans from bottom to top.(again, both normal TV broadcasts and DVD) The best way i can describe the effect is like a 'wave'. Is there something i can tweak in the service menu to correct this.