Well, here is the latest upgrade I am working on.
I bought the 3.8 watt laser from J-Tech Photonics ( https://jtechphotonics.com/ ).
I printed the mount posted by @JasonWest on this thread: https://discuss.inventables.com/t/jtech-laser-mount/32164/8
Everything is on the mount and it comes off of the system with 2 screws attached to the left side of the Router mount. Very easy to put on and remove. I still need to clean up the wires (mostly shorten as they are way too long).
I added a bit of complexity to the connection of the laser by using a much more powerful power supply to run my system. I have a 48v 12.5 Amp power supply running everything, so I have to pull out the old Inventables powersupply and use that one in conjunction with my Gecko G540 supply. I will wire up the power supply, and configure Mach 3 this weekend.
One thing to note about J-Tech Photonics...Jay Johnson at J-Tech has been a huge help in getting me to understand how things get connected. Every question I sent was responded to very quickly. Great service @JTechPhotonics!
More to follow...