The 03 & earlier rigs have one of two different bracket designs. Both crack the internal brace welds near the bottom of the bracket, starting next to the frame & continuing to the left.
The problems are a) when a weld starts or stops it is not full strength, and 2) the highest stress is next to the frame for this type of design.
When the weld cracks get significant, you can have a certified welder grind out the OEM weld, reweld, and add a fore-aft brace welded in to the angled front & rear internal stiffener plates. The new brace will be trapezoidal in shape, and weld over the frame end of the stiffener welds that crack. this brace "completes" the stiffener weld design by putting a "return" on the original weld so it doesn't stop abruptly where the stress is highest.
The repaired weld + added brace looks like this:
The added brace is gray metal in this view, it hasn't been painted yet. You can see the new welds easily. Frame is on the left in this photo and camera is facing rearward.