Sportrak burning oil (again)

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On my second sporty, burns a lot of oil 1L per 100 miles.

Lots of blue/grey smoke at bottom of hills which made me think stem seals.

Replaced stem seals (which were a little worn) without removing head but made no difference.

Combustion pressure all good 205,210,210,200.

PCV pipes all clear. I have run out of ideas.

Car drives really well good acceleration/power

Any suggestions/ideas most welcome

thanks Mike