Not sure what everyone is using to attach their 3D Chameleon to their Prusa MK3S+, I was using an adapter that I saw linked on YouTube on another person's MK3S setup, but it just allowed the Chameleon to just go into the metal adapter, but not screw down or anything. I eventually had issues while still troubleshooting getting this thing working with it popping off. I modified the official one for the MK3 to have room for the filament sensor and room for the side door to open. So, it should allow you to screw it into the top of the carriage without needing to remove the filament sensor board. Hope this helps others.