I cant seem to find a good used rear brake hub for my 300. My bearings went out and ate the carrier and the hub sealing surface. Will the 400 ex hub work? I dont know if the splines the same or the size of sealing surface is the same. I know it is a 4 bolt so it would have more contact. I bought a rad tapered bearing carrier and really dont want to start eating the seal right off the bat.