Okay update, pulled the offending cylinder head. Gasket was pristine, no obvious damage. I didn't find any large corrosion or rust spots in the targeted areas but i did note some pitting all along the very lower edge of the deck from the crimped areas mentioned in the service bulletin. I sanded the deck per the TSB and thoroughly cleaned all the holes and deck with brake kleen and will be reassembling tonight with a fresh gasket and bolts. Hopefully no more issues ![Mad :mad: :mad:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)