Got some replies from the other thread I started on the antifreeze leak. Turns out the header bolts DO go into the water passages on the outer corners. I plan to pull the bolt where it is leaking and wrap it in Teflon tape and put it back in to see if it seals it up. May do the other four corners as well just to be safe, but would hate to take a chance of more leaks by messing with the ones that aren't leaking. Think I will stick to this one and go from there.