I would ditch the 3 piece system and use a one piece.
Henry bragged that if one piece of his mechanical brake system broke, you would still have brakes on the other 3 wheels trying to put down hydraulic brakes..
Not so with a 3 piece piece shaft.
Lose one rod or the dog bone falls out, you then have no brakes AND no handbrake either and you are along for the free ride.
It happened to me, lucky was in a rural area going 20 MPH and had to just run along and hope to hell the hill ended before I ran into something.
Turned the engine off, but the 4.22 compression didn't do much.
I do worry when I am driving thru town and IF any part of the brake broke when kids or someone was crossing the road, I would have to run into parked cars to stop.
Maybe you can keep the 3 piece and carry an anchor to throw out......