The Steam PRO Espresso Maker was defective right out of the box.  A gasket/o-ring was not mounted properly and failed to seal the unit, preventing it from functioning as detailed in the instructions.  Unfortunately this is a very flimsy item and does not appear to be sufficiently sturdy for anything approaching regular use, but what bother me most is the quality control of the manufacturer in shipping a unit that was improperly assembled and could not possibly have passed any sort of testing.