Q: 80% clyinder leakage on all cylinders

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engine started running erratically then died would not restart. checked fuel pressure and ignition system both ok. checked compression on the 3 cylinders on the right bank about 60 psi on all 3. I assumed it had jumped time. pulled it apart and all timing marks line up. used a cylinder leak down tester and all cylinders showed 80% leak down. I cant hear any air escaping from the valves, I have both cam covers off and the oil pan, I don't hear any air leaking past the rings. WHAT AM I MISSING !

My car has 145000 miles.
My car has an automatic transmission.

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