Before going out to purchase replacement fans. This is what I did to my RSM130 fans which cut down on the noise
1. Remove the fans from the hood
2. Carefully removed the sticker and and rubber cover from the the fan
3. Paced a drop of 3 in 1 oil at the bearing/axle.
4. Worked in the oil by manually spinning the fan back and forth.
5. Replace the rubber cover, sticker and reinstall the fan into the hood.
Red Sea has instructions on how to remove the fan from the hood and there are a few videos on Youtube which will guide you through the oil.
I did this six months ago and the fans are still relatively quiet.
These fans are small and move a fair bit of air, there will always a audible noise produced from them.
If you can't stand the noise, I believe Steve's LED carries a different type of fan, from old Sony Trinitron TV's. They are a drum style fan and should be a lot quieter.
Good luck!
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