[Joe's Garage]

I notice in your pic that the PCV line appears to have been run back under the intake on top of the valley pan.

I also notice that the hose is routed over almost the highest spot on the valley pan - right next to the intake ports for cylinders #2 and #4.

I don't recall how much clearance there is between the bottom of the intake and the valley pan, but it's probably not too much.

Is there a possibility that the hose it somehow taller than the clearance at that point and that it is holding the intake up just slightly?

So that's something else for you to check. Good luck!