Hey Scott,
You mentioned
oil being pulled into carb via the PCV valve. Your valve covers should have an internal baffle or at least a tin plate to stop or reduce
oil splash being drawn/sucked into carb with the vapor it is intended to remove.
If you have a baffle and just a little
oil then maybe it is just forming oil in the low and cooler area of the hose from vapor rain out. It may not be a big deal.... I hope