put a aluminium or steel angle inside the tube parts to stop the deck from bending. you may have to wrap the angle in tape and hammer it in to keep it there. kinda like reinforcing your fork. you will have to find a size that slides in nicely without wobleing around too much. then you put 2 long bolts or 4 short ones thru the deck, reinforcment and dropouts. this will stop them from falling out when the welds crack all the way thru. like this..