I have the Samsung HCN5527W HDTV. It comes with the Perfect Focus feature, but it doesn't work all that well. I usually do the red and blue convergence manually. Problem is, every time i turn the tv off and back on again, it's all out of whack and i have to re-adjust it all over again! Is there some way to make a projection tv image stay sharp without having to fool around with it all the time?