No where have I seen anyone ask what is your fuel pressure? The OFV does double duty, it maintains pressure and is also a check valve when the engine isn't running that keeps the return fuel line from siphoning the
IP dry. Have you ever had an oil analysis done? Nearly every high blow by thread has a
BHAF installed. I wouldn't be surprised if it turns out your oil is full of dirt. Dirt is like sandpaper in the engine.