I just tried some LEDs for some in switch lighting but noticed that the LEDs are suuuper dim. Can you adjust brightness somehow or is that just the way it is? I see on the flashing tool that there's apparently keys to increase brightness on the first layer, but I can't seem to control anything. Mind you, I haven't soldered in switches yet, I'm just jumping the contacts atm with pieces of wire, maybe I'm doing something wrong. What's the default layer 1 button?