The backseat on the driverside door's lock doesn't work. Every time I want to lock/unlock the door I have to get an alen wrentch (I think thats how you spell it) or a hooked tool. I went to take the door panel off and I found another panel but it is metal. I don't see a way of taking the metal off. How can I attach the lock nob (the thing you pull up to unlock the door) with the locking mechanism? And how can I get the alen wrentch that I accidently dropped inside it?