Thanks but that didn’t make it right. As a mater of face they Dont offer seats or valve guides for these heads. I asked for one bare head for the time, labor, hours spent looking for parts, and I’m guessing a little over 200.00 in cash buying and trying to find parts and tools to fix their issues. The valve guide was .003 over sized and chambers weren’t machined on both heads. I talked to them on the phone, sent them pictures, four emails with zero return emails. Good luck if you find issues on these heads because it appears they just don’t care.