I've had a 4070 Gelato Junior for about three years. At first it froze a batch of ice cream in about 35 minutes. Gradually the freezing times got longer until it took over an hour to freeze. Now it barely gets cold and won't freeze at all.I contacted Lello service and found that the problem is most likely a refrigerant leak and that repairs would cost at least $75 (not including shipping).I'm now in the market for another ice cream machine. The next one won't be a Lello.