Oil misting from dipstick tube - blowby?

Address the PCV/ Breather issues 1st. As a lot of members already stated, you need air to flow into the crankcase as the PCV Valve allows crankcase gasses to be sucked out. If you suspect a problem with the rings do a Cylinder Leak-down test(NOT a compression test) on it & see how much blow by you get. Anything more than 10% on a fresh rebuilt broken in engine is excessive.
My guess is that it's the lack of a breather on the 1 side that's causing your problem.

Good luck.