Oil brether woes

[dr_jekyll]

With the gt2052s fitted she began to pull the oil from the rocker cover into the inlet so i dumped the breather off to atmostphere.
I have no oil in my inlet pipes nor cooler.
Exhaust does not smoke any colour (nor does it soot unless the mafs unplugged).
Yet she consumes 500ml ever 2/3 weeks.
I believe it all to be coming from the rocker brether as im leaving faint rainbows of oil in my yard at work and the inside of that pipe is thick with oil.

Kinda stuck here. Its been suggested to me that the crank brether is possibly blocked and others say rings. Ive been told to check this pipe by a guy at work at also been told to have a spare as they go brittle
is he pointing me arong the right lines??
Any other thoughts please?

Also to add shes lifted the dipstick in the past

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