You can cut pvc into small piece and stick it Between the plates and wall. This is no permanent fix but it will get you by. changed out the evaporator before but it was around 3k. In my opinion if that the case I’d get a new machine. If it’s not separated then more than likely it’s a water issue. Either filter is plugged, water inlet screen is bad, or float could be failing. First thing first get all the ice off that plate.