Im currently trying to finish my Raspberry Pi powered RC car, that uses a Pi on the car and as the remote, with Remote GPIO to connect them. Currently stuck on

Im currently trying to finish my Raspberry Pi powered RC car, that uses a Pi on the car and as the remote, with Remote GPIO to connect them. Currently stuck on a bug where the Pis connect but the controlled Pi doesnt execute the commands it gets.. Otherwise its all wrapped up, including a custom PCB on the car for controlling the two motors and steering servo. Once this is done, Im going to start work on a custom model BART train+track. Goal is to have it running with a live third rail, and then long term add some code for controlling the train coming into "stations" Also get a job at a tech company in the fall...