The new parts that were replaced recently is a result of the company who produced the prior parts not supplying them anymore. Hillrom is aware these parts melt, break, crack, deform in shape as I have let them know as have others. Please call Hillrom and complain and they will send you a new circuit bag and ask that you send them the melted parts back to them. They will send you a return mailing slip and have FedEx pick up at your house. Their engineers need to see what is happening. I am not happy with using the system due to inability to sterilize (please let them know that putting in the dishwasher is not a sanitary way to remove NTM, pseudomonas, etc. ) The more patients they hear from the better. It's an expensive machine and the circuit bags are expensive for those of us that Medicare didn't cover (that's another story that needs addressing) and I'm considering returning the machine altogether if something isn't done soon.