My fan had loose screws but even after getting everything tightened up, it was still badly out of balance. Balancing is easy. I used a thick 1/2" flat washer as a weight and glued it to the top side of the blade with Gorilla glue. To figure out the balance point, first attach the washer temporarily with a couple of stout rubber bands. Move it from blade-to-blade until you make a positive difference. Then move it in or out on the blade to get the best results. Its easier than it sounds.