fixed a bent hub/upright and now the hub nut won't stay tighten. turns out the half shaft is bent just enough that the cv doen't sit in the hub far enough and it slips out. since i've had this thing appart for the last week i'm feelin lazy and wanna get it running for this weekend's autocross. can i get a half shaft with cv's and boots assembled and ready to go in or will i have to assemble it??