I have put a 6" gorilla lift on my 750 brute, used. I thought the front left axle, the lock in one, looked bad on the splinesto the spider gear, and after toying with the end ring, cause it would just pull out with ease, I bought a new one from gorilla. Put it on and it did the same thing, pulled off with ease. So I know I have more issues, and not sure what it could be, other than i know the end ring is not lining up with the inside, i take off the end piece that splines up with the cup, it goes in and stays in . I let my mechanic at work replace all the bearings and seals, but I didnt do the clutches, because im a cheap ass, so not sure if he did something wrong, because my old sti axle, which did not have the splines on the end of the cup, would lock in, after he rebuilt it. Does anyone have a clue what it could be, I know I will have to pull it and tear it down again, im sure, but need to know where to start.