Okay, so I finally find someone I think is reputable in town to replace my valves. I get a call that there is some corrosion in one of the intakes and that it may be corroded all the way through to the water passages. He says a compression test will verify yes or no. This is a 91 jdm head. Has anyone had any similar experiences. This whole f'in rebuild has fustrated the hell out of me. I'm almost ready to start selling of parts.