The hinge and the bands are under high spring tension. The manual: never loosen the bands or take the hinge apart without the hinge disengagement kit fitted, because the hinge cannot be removed safely without it; any change of dome, base or bands needs two people, gloves and safety glasses. Refit the base band first, front pin first, with a helper holding the hinge (Kamado Joe Europe).
The manual: "Only minor adjustments to the weight of the dome should be made." It calls nothing else technician-only.