I bought this machine and am quite happy with it. There's just one thing I'm not sure if this is normal. With my old De'Longhi, I always put a cup underneath to rinse and the drip tray was always empty and clean. With this machine, the drip tray gradually fills up despite the cup and I have to empty it regularly. Is this an individual problem with this specific machine, or is this the case with all Dinamica Plus machines? Thank you very much in advance!