We installed the new window "run" rubber, and the 3D printed "Slider Sash Connector Clips" last weekend.
We scraped off most of the old rubbbery glue, degreased it and used polyethylene Gorilla Glue.
Then we hustled to get the window installed, closed it, and gave it 36 hours to cure.
It works GREAT. The only fear is that PV?? material may not hold up in the summer heat inside the door.
We'll see.