Hi, great build. But I need to pick your brain. I've a problem where only the left hand side 5 and 18 out of the 20 top row LEDs light up. None of the right bank of LEDs light up, nor do the last 2 on the top line. I've made this twice now, using a new strip of LEDs and using new wires, but getting the same result. I'm new to arduinos and simhub. Wondering if you've come across this issue before and it's a glaring error on my part somewhere. Thanks for any help. Mark