Yeah, though this scanner was built before 445nm lasers were released, so I wasn't intending on a blue for a while. Was just easier to throw the blue in there as it fit, not much red is lost on the dichross anyway, they're pretty efficient
640 is indeed an awesome wavelength, although it's a dual laser-wave module, and it appears my beams are beginning to split ever so slightly. Hoping I've got one of the adjustable modules