@kook and you can find my history with them here: Marble | Carvon V4, Zenit Marble, 12s4p, Surf Rodz, Focbox x2
It goes into taking them apart and some screw sizes etc…
More can be found on the old forum that I didn’t move to my thread. https://www.electric-skateboard.builders/t/tutorial-how-to-disassemble-and-reassemble-the-carvon-v4-speeddrive-wip/65453