Broken Lippert weld? 2005 Cougar

Cougarnewbie wrote:
I just noticed that with the fiver unhooked I have a separation on the curb side near the front cap. The material under the overhang surrounding the king box is dropping away about 3/4 of an inch where it meets the side. The scary part is that when I hook up the truck and put weight on the king box it closes up. I took down the trim insert on the underside and tightened the screws. It closed up a little but not much. I fear a broken weld up in the framing. Any thoughts or suggestions? I will try to post pictures.
Thanks
AL

Found an 1/8 in. steel plate/flange that runs under the upper deck from the cap back 4 ft. welded to the box frame and screwed into the aluminum bottom of the side wall. There is a screw that was never there because Keystone's aluminum stops 2" from the cap. The opposite side the alum. goes all the way to the cap. The steel is ripped. Lippert is sending a new part. I have a welder lined up. Lippert tech help was great!