minkaAire Mojo II Manual De Instrucciones Certificado De Garantia página 21

SYMPTOM
Fan Wobble
SOLUTION
NOTE: All blade sets are grouped by weight. Because wood and plastic blades vary in density, the fan may wobble even though blades are matched.
Make sure outlet box is secured to building structure, if necessary use the wood screws provided to further secure outlet box to joist.
Make sure hanger bracket is secure to the outlet box, screws are tight.
If a Balancing kit is provided follow the instructions included with the balancing kit to help correct any excessive wobble.