I have a 50" Toshiba RPTV that is about 4 yrs. old. In the last month or so I can see red ghosting (image seems to tilt to the right with red lines)in the top center and left sections of the screen. When I try to adjust the convergence, the red "cross is not straight up and down in sections 1 and 2. In these sections the red cross is at an angle to the right and can't be lined up with the white target. The blue cross is OK in all sections and the red cross is OK in sections 3 through 9. Any ideas for the newbie? How can I re-align the red cross in sections 1 and 2? Thanks in advance.