Hi all, I was exploring the engine with my neighbor (former Coast Guard diesel chief) and he pointed out the zinc locations on the oil cooler and several other spots. I loosened one of the cap screws and the anode unscrewed from it an remains in the hole...common? solution? I tried to lightly coerce it from its perch with a needlenose without damaging the cast threads without success. Looking for some advice before the surgical tools come out.