It is more than obvious that Eshops has a bad batch of pumps or that they have sourced a different line that is quite unreliable. The number of recent complaints here on this site is probably an indication of more problems elsewhere. Just because you got a good pump does not mean that there are not a lot of bad ones out there. If it was my money it would go else where right now until I KNEW Eshopps had it resolved. Thanks for folks posting this to warn others.