Ok just put a new passenger side head in with all the gaskets..... before all this happened my oil pressure was always hanging around 60. and when it needed the head it was hanging around 40 and 60 during acceleration. now its great when the engines cold but after it gets warm and the longer it is running the worse it gets. it hangs around 35-40 in overdrive, during hard acceleration it hits just below 60 and at idle it drops to 0. Whats the deal?? thanks.