Well I just clicked on download. I now deleted the whole aircraft and am redownloading it right now. But it said version 1.0.5 before deleting it.
Edit: Okay so I made some measurements: pumping 700 L from 9 to 11 takes 1 minute 6 seconds
from 11 back to 9 then takes over 6 minutes.
Is this meant to be that way? I always use 2 pumps and 2 inlet valves.