The instructions (QR code / digital only) didn't mention anything about inserting rubber gaskets inside of the hubs, nor did my kit come with enough. Took me a while to figure out why there were so many leaks which was very frustrating. Fortunately, I also ordered extra hubs so I had access to some more gaskets. When I called their support number for help during installation, nobody answered or ever called me back.
Installing the float valve required a wrench and a lot of elbow grease, I suspect due to some miscasting of the plastic threading on the valve.
Once I finally got everything set up, I'm happy with it. The quail don't like the nipple waterers which is too bad, as the cups are much more annoying to clean out.