I have a atlantic marine hot water heater model # T10E not sure how old it is but the boat is a 1989 Formula PC. The question is does anyone know how to get into this heater to change heating element. I have power going to it but not getting hot figured i would try the element-but I dont see any panel or even screws for that matter to get into the unit. any help would be appriciated- i believe i can find a replacement element if i can get into it Thanks COOL IT