OK, I pulled the engine and took it all apart to get to the cam bearings. Many people asked if the bearings for the cam were install correctly. Having them installed incorrectly may have caused not getting enough oil to the top of the engine. The rear cam bearing shown in the attached picture looks like it did not get installed back far enough. I think the groove that the hole in the bearing is supposed to line up over is still back further. The other bearings look OK. The middle three I can see down through the hole in the main bearing through to the where the cam would be. The front bearing is lined up with a feed tube and the groove can be felt with a straightened paper clip. Any thoughts, is the rear bearing set wrong?