My brother in law has a grundig 28" WS CRT (wf70 3020 ?), which has developed a fault where it over stretches the picture (horizontally) massively, even in 4:3 mode the picture is off the edges. Changing the TVs aspect ratio doesn't seem to change the picture much, apart from the expected vertical stretching of a couple modes. It is also bending the vertical lines towards the edge, such that they bend out towards the corners. Is this fixable via the Service menu (can you access the SM on these TVs ?). Or is it an engineer job - I have suggestions that it could be a duff capacitor or board. Any suggestions welcome.