If I am understanding JTpantera's picture "correctly?".
Would not the level of oil in the glass oil filter, about 1/2 inch, indicate that the hose from the PVC to the glass oil filter is partially filled with oil to the level of the oil in the glass oil filter.
Just thinking outloud here....what about a "T" fitting at the very bottom of the loop of hose, where the bottom fitting of the "T" routed back into the oil pan?
Then the hose is now venting built up pressures in the oil pan into the base of the carb.
As an aside bar Doug... You should KNOW the "brown acid" is a BAD TRIP!!! I was more of a 4 way hit of Window Pane vs "Brown Sugar" cubes.
https://www.youtube.com/watch?v=OE6E7Q7DPJw
The Producers is a GREAT movie!...Mark
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