2009 370z Doors problem or not?

Eighties Meta

I've had this car about 2 months now and never noticed this until today. I was shutting my driver door much slower than normal for whatever reason and I noticed when I got about 3/4 way shut I ran into what felt like something rubbing and you could feel the vibration. Looking into the open doorwell could see nothing wrong and visual inspection doesn't show anything that appears to be rubbing. Even tried some WD40 into the joints and moving parts. so, i go to the passenger side and do the same thing? holy crap same thing? has anyone noticed this, seems awfully odd it would be on both doors so I'm assuming this is normally can anybody close their doors very slowly to see if you run into the resistance or scraping feeling at about 3/4 way through.

Thanks
Kevin