I am going to try fastening two Kia u-joints together. I hate to remove my current double u-joint. It is beautifully made. The Kia u-joint seems a bit crude.
I ordered two of the things that connect to the standard rubber disc. I will cut off the splined shaft from each. I will use one to connect the two Kia u-joints together and use the other to replace the 36 spline thing in the end of my steering shaft.