Spitting oil through tailpipes.

why no PCV? you dont need to run it under the carb plate. And whats the issue with the oil drain back out of the heads? If your exhaust valves are not submerged in oil then there is less chance of them pulling solid oil down past the seals. Umbrella style wont help in that scenario. I see now that there is no drainback under the valve guides on those heads...