I installed a small 21 plate (+nnnn-nnnn+nnnn-nnnn+) 3.5"x3.5" from scrap 304 ss I had. I bumped up the solution to 15 amps cold and making about 1.5lpm. Had to made the thing small (4.5"x4.5" total) with a 1 quart bubbler/refill tank to fit into very limited space of the lazer. No other mods at this time. 29 mpg to start. Will keep you informed on whats going on. I thank all of you for the ideas and work you are doing. Bobb