I am rebuilding an equipment trailer that has two 6,000 lb dexter axles. At some time before I owned it, there was a bearing failure which caused a cut into the taper portion of one of the spindles. It is cut maybe a quarter of the diameter. The dexter website does not recommend any non-factory welding of replacement spindles on to their axles, so replacing the entire spindle is not an option. I noticed that there is a you tube video showing a guy TIG welding an identical type of damage on a spindle. He builds up the area slightly above the original thickness, and grinds it back down to the proper diameter, checking with a micrometer as he removes material. I have a couple of friends with TIG welders who would help me out with building up the spindle. Before I go this route, has anyone had any experience with doing this kind of repair, and if so, has it held up okay? From what I know of TIG welding, it may not weaken the surrounding area as much as MIG or stick welding. Any advice would be appreciated.