My Cubika had broken and I need to try and fix it...fast. Gaggia want £65 to have a look at it. I think there is an air lock in the pump, as water/steam flows from the nozzle, but not through the main part (where the coffee comes from - dont know its name). Has anyone had the same problem? how did you fix it? A new pump is only £25, so I am tempted to try that instead.