1. Replace the center immersion heater.
2. Replace all the site glass window gaskets (unless they are already teflon and undamaged)
3. Get CLR or white vinegar and clean the glass and the inside of the boiler.
4 Use ONLY distilled water.
Where do I get the center immersion heater, and where do I get the metal sheath that fits this style #50? The Jensen website parts site doesn’t have #50 parts. I suppose I could call em’.