I've just aligned mine using ZigAlign, which is a mirror-based system, no lasers. A parallel plate screws into your lens filter thread, another one goes in the negative stage, mirror on the easel, and a 45 degree mirror alignment tool completes the kit. You align the lens stage to the easel, and then neg stage to the easel, at the usual column height. Seems very precise. http://www.zig-align.com/zig-align/Enlarger.html