Can anyone help me with my yo-yo factory velocity yo-yo?

hi, i just bought a yo-yo factory velocity yoyo. its been working great for about 2 days. then suddenly i started playing with it and it only sleeps for about 8 seconds not even. i tried taking it apart and putting it back together many times but it doesnt help much at all. when it was working fine the bearing would make a noise. now the bearing noise comes intermittently. please help