Low oil pressure?

I never did find the problem
The engine just need to last till the winter and its gonna be pulled and torn down for inspection any way.
So I figure I can deal with it till then.

I did find something much more scary today tho, check out my latest post!
Not sure if this was suggested earlier in the thread and I know everyone does not agree, but you could unthread your oil pressure sending unit and stick a coat hanger or something down the hole and at a certain depth you should hit something solid if the plug is in there. The plug is inline with the oil pressure sending unit hole.
Many years ago I missed the drivers side galley plug, that would make pressure very low too and noisy lifters.