Sorry...thought you ment the latches at the bottom of the door. First, how old is the trailer? Under warranty? Make them fix it. If not, I would take the door off, take off the hinges. Check to see if the screws stripped out the frame....make sure they were screwed into the frame to begin with.....Get stainless steal screws one size larger than existing screws, buy some butyl tape, squirt some silicone in all existing holes, then wipe off excess, put butyl tape between the door and the hinge and on the trailer where the hinge attaches, reattach door, trim excess tape.
2011 Lacrosse 318BHS Touring Edition
2012 Ford F150 SupCrew 4x4 XLT 6.5' Max Tow