Port wing.

This is Starboard wing picture taken through root rib. Got scared for a second, thought what is shown was a mold mark, but verified with a piece of welding rod that there's in fact a vent hole. After we determined that photo inspection would not allow us to inspect all forward ribs, we came up with a non-sucky inspection method. We shot compressed air through the front lift pin hole and was able to get a nice breeze felt by Wayne's hand that was in front of spar at wingtip/s. Used a 1/8" tip on air gun into lift pin hole (very poor fit), and went slowly making sure to not develope too much pressure by monitoring leakage with lips. You don't want to connect your unregulated 3500psi scuba tank with a perfect fitting connection and open valve "full". You could probably use the exhaust side of vacuum cleaner as a pressure source. Once you feel the slightest breeze at the wingtip, stop, it means you have good venting.
Y8-11-16