2004 Eblue SRT-4
Pitting as in warped? I don’t see leaks coming from that area. But coolant does not return back into radiator the tank remains full at all timesSounds like the upper thermostat housing has pitting where the rubber seals in the rad cap meet it. Extremely common problem that is only solved by a new or mint upper thermo housing. Coolant gets pushed into the overflow and barely returns as needed.