On my model 41168 Miter saw, the guide fence (part number 91) broke in the middle of the "C" bridge. I have noticed over the years that the fence flats were getting out of alignment as if that "C" bridge may have been stretching. Can it be welded or should I buy a new fence, where can I buy it and how much will it cost. It's a great saw and has been used in dozens of cabinet type projects.