My dad bought a 2000 Durango the other day (yeah I know, I warned him) and the left rear door locks were making an "annoying noise" so he took the whole mechanism out to try and fix it, didnt know what he was doing and put it back in. He then closed the door and now it wont open. I have tried everything I can think of - wd40 soaking, taking the hindges off and trying to rock it back and forth alittle, checking the linkages, ect. I have never come across this before, and not knowing what he actually did/messed with does not help, any ideas?