I recently moved into a new construction home with a Rheem hybrid hot water heater (PROPH50 T2 RH350 DC). Unfortunately, my hot water has developed that dreaded sulfur smell so I would like to try replacing the anode in this tank with a powered unit. The manual for the tank says there is an anode, but there are no instructions indicating where it is located. I took the cover off the unit and burred below the condenser under some foam is what appears to be an anode bolt. However, there is a plastic sleeve around the bolt and since it isn't centered I can't get a 1 1/16" socket over the bolt. In addition, right next to the exposed bolt is what appears to be cap that is glued to the foam. See the attached photos. Does anyone know if either one or both of these are anodes? If so, any suggestions on how to access and replace them?