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Hi, if the trunk handle protrudes after awhile the leak is probably in the vacuum servo for the handle. When the servo leaks it causes the handle to creep out over time. As far as the seat bolster is concerned the leaks are usually in the seats. Try turning the lumbar dial all the way off and see if anything changes. If it does you will need to test the chambers in the seat for leakage.
Let me know if you need anything else.
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