Looking at your pic I would say that your draw bar is bolted at the tip of the A frame, Welded at point 'A' and bolted again at both point 'B's
I would look into shortening the bar at point 'B' and moving it forward and then adding another bar across where it was previously bolted?
You would have to have some welding done and some cold galve (I've never thought much of this product, prob better with hammerite?) to be able to bolt the "B's back to the A frame.
There are loads of other ways of doing it, like adding an inner box section inside your draw bar to act as an inner sleeve which will allow you to continue a drawbar the same size, joined by bolting and welding.
But at the end of the day and with any old trailer, if anything goes wrong, its down to you