One of the first things I do after I buy a new car has always been to try out the jack to make sure I know how to operate the jack to change a tire. Then I determine how to jump start it if required. The jack drill went fine but I had a heck of a time getting the fuse box cover off to find the lug to attach the jumper cable. The clip on the rear outside (fender side) of the cover just would not yield to my fingers and I had to fetch a thin blade screw driver to open it. Even then it was difficult. (I finally got it off and glad I took the trouble to do so because my jumper cable clamp was too big to get on the lug. I fixed that.) Is there some trick to unfastening that clip? Thank you very much.