OK, back from the Alaska cruise. Now back to serious business. My mechanic buddy came over, checked the lifters and cam lobes on #5 and 6 and gave the seal of approval. We replaced rocker screw on intake #5 and checked all others. #5 was only bad one. I buttoned everything back up, hit the starter pedal and she fired right up. Purrs like a Singer sewing machine. Thanks guys for your input and thanks for the info on Dan's Obsolete.