Just wondering if the valve seals on a 312 should be floating up and down with the valve stem or stay down. Mine were all in the up position on the valve stem. My newly rebuilt 312 is puffing smoke on the right side and using a quart of oil about every 300 miles. I didn't notice the smoke at first but there is about 1200 miles on it now and went thru 3 quarts of oil already. Checked the plugs on all cylinders and all are very clean and light tan in color. Any ideas?  Thanks  Dave V

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