i seem to be having a problem here with a creaking noise coming from not the door hinge but the metal thing that it grabs onto(on the chassis) it seems like it has started corroding around and makes a craking npise when i drive over bumps. it is not solid anymore it moves just a bit and makes a squaking noisem should this be osmehting to worry about as i dont want it to break one day and not be able to keep the door closed