I notice that when projecting any kind of text, titles and credits, the text very noticably flickers to a point where it is kind of annoying. Any other image looks fine. The tubes have roughly 5,000 hours on them. I read somewhere that the reason for flicker could be degrading components of the PJ. I don't want to scrap this PJ. However, does this flicker problem indicate that I should look to get another PJ?