Low oil pressure at idle?

When changing oil weights does not bring the oil pressure up, it's time for new rod, and main bearings to tighten up the oil film tolerance.

That in turn will keep your oil pressure up at idle.
I have a 6.1 that needs a rebuild,and will fit perfectly. Just didn't have time to rebuild it ,and get it to the show on time. I will probably build it how I want and install it later. Just need this one to not tick ,and last a few months