I just finished the hardware and software for Project 2:Spaceship Interface. Everything is working as expected except the middle LED lights but only very dimly. Green is on, I push the switch and the green goes off and the other two blink but only one lights as expected. I have changed out the 220-ohm resistor, changed the digital pin from 4 to 7 (also changed code to match), changed the LED, and changed the jumper. None of these changes altered the LED brightness. Any help would be appreciated. Thanks