After a long brazenly (shameless) solo afternoon drive, decided to add gasoline to the beast' gas tank, I did and closed the tank lid with no problems, upon arrival and for some reason

decided to open the tank lid again and it didn't open

. Then the wireless phone rang and decided against performing further troubleshooting at that juncture.
I am hoping that the cable clip needs adjustment or perhaps lubrication, it can't be the fact that I added "extra" finger pressure when closing the tank lid at the petro station.
Your ideas to attack the sticky-issue are welcome.
Regards.
Alfa_mo