318/390 stroker kit oil leaks NEED HELP!

One last question before I test again tonight. The stock set up had the PCV valve on the drivers side and the breather on the passenger side. Now that we have rebuilt the engine, we have it opposite (breather on drivers side and PCV/ catch can on passengers side) I wouldn’t think that would matter at all but could that be an issue?
Doesn't matter as long as breather on one side, PCV on the other. Do you have the breather attached to the air cleaner with a hose as in the diagram? That is an important and often left out piece of the puzzle.