MAN THAT POST IS CONFUSING rOSS. what are you saying ........
and where is the link to the other thread.
Also i have found most of the old stock are rooted any way as the plasitics brittle and there is often cracks all the way though the scew sections so ther enot worth that sort of coin no matter what. and you cant glue them as its a twising motion and it tears them off again.
The road version is metal inners so the screw helix section is steel, that seems to fix everything as they dont crack or wear out, but the helix is slightly differant pitch so you need to complete female part as well ( hence the change over) longer arm give more pull too.
I cant see it being hard to try to find someone to recreate the plastic helix in a metal material sleeve so you can press it back onto the knurly bit and just cut off the old plastic section. Not sure why it hasnt been down unless its some crazy machining issue