Over engineered door lock

BOM:M3x22 - 5pcs - gearboxM3x10 - 3pcs - gears coverM6x10 - 1pc - knobM3x5 - 4pcs - piston linkages8mm OD aluminum tube, ~52mm length - 3pcsGreaseThe drive gear must be aligned well before mounting the planetary gearbox. There is alignment mark on the drive gear and the bottom plate. Align those marks while the locking bolts are fully retracted. Some flexing of the bottom plate is required to get the gears in place.