K'Nex volcano coaster - update 7

The control system is not complete, although it's nearly finished! As you can see, the train keeps rolling down the launch instead of engaging with the catch car. That's the last piece of automation I need to sort out, then this coaster will be fully functional!
I also plan to expand the functionality of the control board and add a manual operation mode, in addition to full auto.
In this setup I'm using 1 Arduino Uno, 6 Allen-Bradley industrial buttons/lights, 1 DC motor with Vex planetary gearbox, 1 contact switch, and 5 TowerPro SG90 micro servos.