8BA cam position

[solidaxle]

I developed a loud knock in the lower end of my 8ba. To eliminate any valve spring problems I pulled the intake and checked for broken springs and checked the valve lash. Everything was within a couple thousands and the springs looked good. I then pulled the pan and checked the rod caps all are torqued to 42- 45 lbs., there is no movement that I can tell except side to side, which is required. I noticed the camshaft is not centered in the bearings, it's pushed to far to the back of the motor. This can't be correct. I also don't think this is the source of the knock. Any ideas??