I made these because the carriages on my DeltaGo kept breaking & getting replacements took forever. You'll need these screws to install the new carriage sockets. https://www.amazon.com/Du-Bro-Socke...pID=41imdALyNmL&preST=_SX342_QL70_&dpSrc=srch Those screws will go in the ends. Use the original screw in the middle of the old ones for the middle of my design. Use the original mounting screws to attach them to the machine. Lightly sand the mating surfaces & make sure to trim any nubs of plastic in the sockets. I printed them with a brim & support touching the bed.
Print with support touching the bed.
Sand mating surfaces lightly & remove any bumps in the ball sockets.
I designed this with TinkerCad.