OK I need help! Anyone with a box burban or C10!

I hope my fender just needs to be re-aligned, but Im afraid that the frame might be flexing.  did anyone else having this problem?  my truck is laying frame.  When the problem started the passanger fender was pushed up against the pass door and I wasnt able to open it.  So i tried just lifting the front pass wheel and kept the rest dropped, and i was able to open the door... I needed that door open to get to a bolt to re align the fender.  So I had the truck dropped and adjusted the fenders and tightened everything, and it was fine... then I lifted the truck and I couldnt open the door again!  Then when I dropped it, it was still stuck!  So if the frame was flexing it should be able to open when I drop it again right?  Please help!!!!

if that gap moves and all your sheetmetal bolts are tight then yes, your frame is flexing. probably your front horns

But if the frame is bending, wouldnt the fender bend back once the truck drops?

maybe im retarded but i dont understand your first post but if the gap is moving something else has to be moving to make it move. the only thing that fender bolts to is the front core support and your body. one of them is moving if that gap changes