Anti wobling for A1. I don't know if it will work with A3/A5.
You need 608ZZ bearings (8x22x7).
No screws needed, only zip-ties.
Its not very strong connection but that way printer will just slide it off if will go too high on Z-axis.
After I printed it I made a zip holder (hole) on smaller part too so the file is updated.
print-ME SmartFit PLA