Charge Flap not Closing

Hi. Had a niggling problem with the right hand charge flap not wanting to close. When I did get it to closed and locked, it opened again when I unlocked the car. So a trip to the Main Dealer was needed. I was probably going to be told "you will have to book it in Sir, our next available time is July" .But, "hang on" the receptionist said I will get a techy to come out and have a look for you. Anyway 10 minutes later I am back on the road with a normally operating flap. The techy said the mechanism gets a bit sluggish sometimes. Probably a squirt of WD40 was used. I was so pleased with the service and in a state of euphoria I gave the techy a fiver.

Tony