Hi Adam:
I have a side entrance tent I acquired last Fall when I bought a used 560. The original owner tells me the tent was used only once and it looks it. I don't think the tent is going to be something we will use so I'm inclined to pass it along.
Now for the tricky part ...
Our 560 is in winter storage and inaccessible until late April or early May. That matters because the side entrance tent is inside the trailer. Because I'm expecting another tent will turn up I'd prefer not get into discussing price and logistics. If you haven't found an entrance tent by late Spring 2019 please send a private message and we will discuss.
Best of luck, Craig