Hi all, I'm having problems with the LCD controller of my new kossel plus printer. It scrolls through the menu all ok but when you press down on the button it does nothing. I've swapped from the supplied reprap discount to the full graphics and also swapped over the ribbon cables but it hasn't made any difference. I'm running it on marlin 1.1.9 and did swap the controller in the config when I changed screens. Any ideas?