I meant to reply to your PM but I have been a bit busy at work. The custom dichro reflects 635 and passes 660. It can be angle tuned for some leway on the wavelength but you may have to do some creative laser placement. the more I look at your set up the more I think you may have to move the blue and gree towards the scanners and have the reds last, or combine the reds and then add the combined red to the cyan beam.
I wanted to see if anyone at FLEM wanted it and also to see if someone can clean it; it is a bit dirty and I have not cleaned it since I bought it so it wouldn't get scratched... Then I was going to hit you up.
