Oil misting from dipstick tube - blowby?

Hi guys - Rebuilt the 74 Duster 318 - mild performance - Ebrock 4bbl, Comp Cams 278 cam, stock manifolds and stock heads. Nothing crazy

Since rebuilding, I have a oil leak that seems to be getting worse. It is coming from front passenger side of engine.

Here is a video showing oil misting from the dipstick tube at idle.
[ame]http://youtu.be/tiKerkIL5hk[/ame]

Mopar Perf Valve Covers: Passenger side has fill hole going to a twist-on PCV valve, routed to rear pcv port on carb.

Driver Side valve cover has a standard fill cap. With the cap on (video), good amount of misting. As soon as I remove the cap (venting driver side valve cover), the misting immediately stops.

After running, a few tablespoons of oil are left on the ground, beneath the same area (dipstick tube)

I also have a twist-in breather cap for testing, seems to have same misting/leaking with that too.

Does this just need to be driven more, to seat the rings fully or what?

Probably have 100~ miles since rebuild.

Thanks guys - appreciate any input.

-Ryan