hey, when it gets fairly warm out, I have a hard time getting the key to turn in the lock. This is on either frt door. Ive almost been locked out 2 or 3 times now. It seems to be happening more often. Any suggests on possibly lubing the lock mech?? I thought I read somewhere that you shldnt spray anything. Hellppp, before I get stuck somewhere !! or worse my wife uses my car & it happens to her