I forgot to come hack here and explain what I found. Looking at the clearance on the door to cowl it was obvious it wasn't the problem. I happened to look at the leading edge of the door and saw a round 1/4" diameter scratch. I then realized it was caused by the door popper (interior light switch). The problem was solved with a dab of grease on the scratch. The mystery is, why would the scratch-pop sound come from both doors at the same time. Must be the weather.
