It's been a long time since I've been to this section of HTF (spend most of it in Software), but I find myself needing help with convergence/geometry of my Toshiba 50H81. Yes, it's about 5 yrs. old now, but still great. However, a couple days ago I noticed that any lettering on the screen was blurred. I can't afford a pro calibration yet, and I'm wondering if any of you can provide a link to another site (or can go into detail on your own) that I seem to remember a while back describing how to do this with string and tape.