Quote Originally Posted by drew_goring View Post
Everyone I have heard from says the z-plus is the cat's ass. Mine never worked very well at all. I filled it once, and it has sat in my drawer since. I may have to tinker with it sometime though, because from the reviews I have heard I would still recommend it.
I had issues with mine 'till I bled it right.

Use something like a golf tee and purge it through the filling port. Takes about 3-5 minutes to do it properly. You can hold it down 'till the hiss stops, and then you have to pump it for a while longer until nothing else comes out. Make sure you do it in a quiet place so you can hear the hiss.