won't print red
Caused by buildup of dust on the laser mirrors. The red is on the bottom so it gets the most buildup. You have to take the back off and remove the circuit boards. Then remove the scanner assy. and open it and clean the mirrors with a dry q tip.
There are probably videos on youtube showing the procedure.
A very creative and great idea, I think your idea will be implemented and invented many other ideas. fireboy and watergirl