Recently, my front passenger door lock has been giving me a lot of trouble. At first, I heard a grinding noise every time I unlocked the car, only from that door. I figured it was the gear for that lock. Now when I unlock it with the keyfob, the lock doesn't even open every time. If I unlock from the driver's side it's fine but I can't do that if I'm not already inside the car. I found another thread on here for removing the door panel, does anyone know about replacing the gear and how hard it is? I really only know basic car stuff and am no expert by any means, I'm willing to try it if it's not too hard but I also don't want to bite off more than I can chew.