I didn't get a demo pump!

I had to figure it out myself due to 5 week delay in seeing Mike, he understood though.
A big help to have some practice first.
You will find that the pump is quite stiff to begin with. I could get in less that 10 pumps to begin. I can't remember.
Now I'm closer to 20. Not all full. It keeps getting easier, things keep growing slowly too.
Who gave you the demo pump! Maybe stobill is a bit better with this stuff, they seem to be the main hub.