OTC Controller Unload issue

So I’ve made some progress here but still scratching my head a bit, I basically followed the instructional video again step by step and used the barrel car as my test car. Success it works as expected, I then try a coal and log dump car with the slide shoes and back to my original problem. Seems like there isn’t enough power getting to the track, just a slight hum from the track when I hit Aux 2. So I started to experiment a bit more. I reconnected the magnet and ran the number 2 wire from the OTC controller to the magnet connection under the Fastrak operating track(formerly the black connection) and that started to work but both the uncoupling magnet and operating rails would work using just the Aux 2 button on my legacy remote, Aux 1 would short the track. And big surprise, the barrel car would not work with this configuration, the track actually shorts every time. Has anyone experienced this? These OTC controllers seem to be rather finicky or maybe I’m doing something wrong. If anyone has any ideas please let me know. Thanks in advance.