for a few weeks now my tailgate hasn't been able to unlatch to open. i took off the panel to take a look the other day and noticed the problem. the little lever that goes to the left when you pull the handle no longer goes far enough to the left to unlatch. i was able to open the tailgate by forcing it over some more with a screwdriver. has anybody had this problem that knows how to fix it? does the mechanism just need t be replaced just need to be replaced?