I think it is me that made the rather large goof, not you James. I thought the picture was stretched vertically so I misdiagnosed the problem as vertical linearity. I did not recognize that the picture could instead be squished horizontally, and therefore a horizontal problem. Interestingly enough when I adjust the width, as well as the horizontal linearity slug there seems to be no change to the picture. Both turn easily and were not stuck at all. The horizontal linearity coil looked a bit melty from the start and I suspected it might be problematic when I first laid eyes on it.
