getting into the coolant. Have you checked the radiator as I suggested? Before replacing parts you should do and the radiator test I suggest and feel for any cool spots, this is a no cost test. Also before replacing parts I would do a CO test done at a radiator shop still mich cheaper and less work than parts replacement and they will also check out the rest of your system as well as the radiator feel test (if not tell them to). Sometimes a clogged radiator is not easily unplugged without taking tanks off having core boiled and rodding the core coolant channels out.
