i find myself in a place, i have never been in. the stock rear axles, have erodded away to the point, that i will have to replace them. my guess is, the factory stock axles, were not properly heat treated. it is eroded where the outer axle bearing rides directly on the axle. which is one of the worst idea's i have ever seen. bearing races need to be HARD. if an axle is made that hard, it would surely break. about 6 months ago, i replaced the bearings with a Timken kit, that moves the bearing further out on the shaft. well, in less than 6,000 miles, the axles are torn up. so replacing them is the only option. my dilemma is, should i replace them with Genuine GM parts, and hope the replacement axles are harder, or should i go with aftermarket (Dorman), and hope they are? this is going to be an expensive fix for a guy on s.s. disability, so doing this again is someplace i really can not afford. i am hoping SOMEONE here has had some experience with this, otherwise, it will be flipping a coin and hoping it makes the correct decision.