Well I have done some testing and connected my Z21 and the scenic layout works ok, I run my 8f and class 31 on all four tracks. I did have problems though, it was the first time I had used the Z21 and I could not get a loco to move. I checked I had track voltage, the light was blue on the Z21, the problem was the Lenovo I am using just for the layout had re connected back to my internet. I only found out by watching somebody else on Youtube and noticed I did not have the blue light on the app. Anyway you live and learn, I now know how to connect up, I am currently trying to finish my fiddle yard. I extended the fiddle yard by 12" moving all the points to the left, I need to finish wiring the droppers then I can run some trains proper.