I've just bought a Panasonic TX28DTX10 and I've noticed that right to left scrolling messages (e.g. headline tickers on the the news channels) don't scroll smoothly across the screen, but tend to ripple in and out. It's more noticeable when you're not looking at the TV straight on, but can be seen when you're sitting straight in front of it too. Also, end credits which scroll up the screen look like they're going round on a wheel or a roller. Is there something wrong with the set and, if so, can I fix it myself or should I send for an engineer?