I wonder if there would be a way to mount the aluminum so you could still level the bed. Would clipping it to the glass just defeat the purpose? I like the idea of a PID loop so i will be watching this for a report. If the SSR are as inefficient as it sounds a separate power supply may be needed. My voltage already drops from 13v to 10.5 or so when the heated kicks in and the LED lights flicker quite badly. How much amp draw would just the board and motors take. 10amps? 15?