I had this problem. Yeah, I had to jiggle it and work the key to get it to turn. First time it happened to me, I called AAA but no locksmith would come out because it was a Lotus, lol. I took the car to the dealer the next day and they ordered a new set of locks and replaced them under warranty. No questions asked. It took a couple weeks for the lock set to come in though. I was nervous driving the car during this period but I always managed to get the key turned and didn't get stranded.