Yep I got the first batch but it was returned to address some level-sensing issues (which are now resolved with the update).
All good glad to know I'm using the tubes the correct way around (lucky guess!).
For others playing at home I really recommend the can filler if you are canning and even bottling. Makes the process so much more repeatable, less messy and actually more fun. If I get a mate around with two people going hard at can filling then seaming we can crunch through 19L kegs in about 45mins per keg!!
Yes they seem to be a fairly popular unit. We are just about to release a wine pump too with a 10psi pressure switch so you can feed non-carbonated products to the RAPT can and bottle filler. So this will make the device quite useful for wine bottles. With non-carbonated products this pump will fill a wine bottle in about 20seconds.