I guess my method is too simple for this complicated world.

I always have a zee bend at one end of my pushrods. I use the standard pushrod wire.

I cut the wire to length allowing for the zee bend.
I slip a snug fitting piece of carbon tube over the wire to the end of the thread, shorter than the wire to allow for the zee bend.
I zee bend the end.

DONE!

No glue to break loose, no sleeves and all that stuff. It took longer to describe my method than it does to do it.

Ed S