Hey everyone, I have a question...How should the coordinates of the bulb be set up when building a projector? Should they be exactly halfway between the top and bottom, or would they be aligned with the rear and field fresnels? Just wondering if I would notice a brighter picture if I try it another way, because my picture appears to be little dim.

The centerline of the fresnels, LCD, lamp(burner tube), and triplet should be aligned as closely
as possible. Adjust the lamp to LCD distance to fill the triplet.

Well, I've adjusted te distance of the light to LCD on many occasions, and don't see much of a difference at all. I'm thinking my rear fresnel is either elevated too high or too low, which is preventing the light from extending through the middle of the fresnel. That could cause a dim picture to appear, right?