My new rebuilt 383 is not oiling on the top of the head on the passenger side. The rod was on it right. What could be causing this? The other side is oiling and the gauge shows about 50# when idling. I ran a wire down the oil holes and the back one went in a lot farther than the front one. What could be stopping the oil flow? It has new MP head gaskets on it. I need some help on this fast. Thanks for any suggestions. Ronnie