So I wanted to pair my Corsair SP120 fans with my Thermaltake NiC C5 cooler. The problem is that the SP120s are slightly smaller than the NiC fan holder. The fans do not readily fall out, but I'd like a little more security. Is there a way of discretely holding the fans in place? I understand this will probably cause additional noise, but I don't really care about "silent computing" anyway.