Gentlemen, I posted last week about water in cylinder. I have a feeling the water is coming from my exhaust manifold area. My compression is solid 100 in all 6. Resurfaced heads and new head gaskets. Water still seems to be leaking in the top cylinder port and bottom starboard cylinder. Can I work on the manifold area without removing the powerhead? There is a bit of salt corrosion b/t the block and inner exhaust gasket. Any help would be great