After recently replacing my head gasket, my water jacket leaks a little at the bottom and spark plug. I've torqued it down to specs, and retorqued it after running it to temp and all that. It still leaks. About the repair; My Head gasket kit didn't come with a gasket or enough red 'spaghetti string' to properly seal anything on the water jacket plate to the cylinder head. Since I couldn't replace what I had scraped off the plate, I used a 600 degree automotive silicone gasket maker(not on the head gasket), thinking that would suffice..now it leaks and it overheats when I go full throttle. What is the proper way to make that plate water tight? Thank you in advance, Chris