Another advantage of the printed plastic carriage replacing the metal part is that the weight comes down enough so the head does not drop anymore when the motors are disengaged (for me anyway).
Just noticed on the CoPrint wiki there is a page I have not seen before. It think it might be quite recent - was last updated 16 May '25 and thought I would mention it in case anybody wants to check it out. Seems quite software technical but the page is titled " Setup KCM Set Creality K1 and V3 Series" and then the blurb says: “There are some incompatibilities in Klipper for Creality K1 and V3 series. You can solve this problem by following the steps below;”
https://wiki.coprint3d.com/en/Setup-KCM-Set-Creality-K1-and-V3-Series
Just when I thought my printer was working and my prints are beautiful again.