I got all the parts for the AWD conversion but in my propeller shaft the last section (or first, the one that connects to the transfer case) got the last u-joint shot, there is no movement in one direction, I was thinking of swapping that section with a good one that I found from another part out (same 5 spd one), but my question (sorry if its too dumb), can be made, those are balanced as a whole or by sections? (I don't want to put that part and unbalance the driveshaft)