I just installed one of Darin's brackets to help the steering box pitman arm and I noticed that I have cracks about a half inch long where the frame rails are welded to the front cross member. There is rust and a clearly visible crack on the underside of the main frame. I have 150k miles, no radical offroading. Has anyone seen this on their rigs? The cracks begin along the factory welds, can the frame be welded (again) in this area. Thanx in advance.