If you are not going to drive it on asphault in 4wd, I would probably have them rewelded. Someone with not the best welding skills may have tried to weld yours up and it didnt hold. I know people that run on 38's with a welded front end and havnt had any breakage, not saying they won't break but if done by certified welder they should hold up a while. I would only go this route if money was tight (which it is), you can always replace the gears later. A gear replacement is pricey compared to a reweld. If it were a unwelded set I would say don't weld, but since it was already done why not...