My root cause for excessive blow by through the head breather was my rear cylinder compression rings had the gaps lined up. I had to replace cylinders and when new rings were installed in the correct x pattern ( top comp at upper left, bottom comp at lower right, top oil at upper right, and bottom oil at lower left) my issue magically disappeared. I think I replaced the umbrellas 6 or 7 times and it was always there...even when I installed the cam chest breather setup...
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USN 1991-1995 VFA-81/ USS Saratoga, Iraq 1, Kosovo/ Bosnia Conflict
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