You were right.I took everything off the front and got around in there with a flashlight and found a hairline crack down that switch almost under the VVT solenoid ,which was why it was so hard to find.It almost looked like a piece of the casting .Im not sure that it wasnt there before though..It looks like there may have been some rtv or something around it,and I probably exacerbated it when I installed the new one.What a piss poor design that is.I ended up taking a dremel and cutting into the crack a bit,then putting some JB weld on it.It seemed to fix the problem for the moment.At least now I know now where the leak is.If the JB doesnt hold up , I think I'll try drilling that hole out , try finding an insert to epoxy in it ,and attaching the pressure switch to it.If I have to pull the head to have someone weld it , I'd just as soon replace the head. If you have another idea ,Id be happy to hear .Thanks for your responses