Is it possible the marks are from a stone or similar object that may have been compressed between the sill/door when closing ? I would take a piece of tape like duct or painters and put it on the sill and then open/close the door does it scrape/scratch the tape ?
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2002 Boxster S Arctic Silver with black top with glass window and black leather interior. Jake Raby 3.6 SS ( the beast ) with IMS Solution. 996 GT3 front bumper , GT3 rocker covers and GT3TEK rear diffuser and Joe Toth composites rear ducktail spoiler .
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