I am relatively new to the front projection, CRT world. Would I be entirely nuts to try and switch out the tubes in my Barco 808? I found a source that can refurb my existing tubes. I have built computers for years and I am fairly handy with a soldiering iron. I don't have any experience with tubes and I just thought I should run this by you experts out there before I start the surgery... Thanks in advance for your comments.