Hot Water Pressure Low

In our 2012 Flying Cloud (30 ft) we are experiencing low hot water pressure. The cold water pressure is very good. I flushed the tank and there was some sediment in the tank. Temp is warm when using the electrical switch and hot using propane.



I'm thinking that the thermal sensors are going out, but I thinking that shouldn't effect the pressure.



Any thoughts would be helpful. Thanks in advance for any suggestions.