Actually, The touch buttons do kind of function, but they are reversed, and are not on spot. Almost like they are not calibrated. I even tried plugging the TFT straight into the shield to account for any OE. Basically if I hit where the PH control button should be, it takes me to the Manual tank control. If I touch the manual tank button, it takes me to the ph control, and the up and down button don't function. Anyone possibly give me a few pointers?