Well I had my soldering gun out from last nights successful Thomas the tank engine repair and decided to try and fix our Beep problem too. We had trouble with our Beep stalling on our switches. When running two Beeps one would stall while the other pushed and then they would get out of sequence. The solution, tether the Beeps pickup rollers together between the two units. The Beeps work well together as an MU should.
Enjoy the video.
Ron