Thanks! The majority was on the intake side. Once the sticker is removed from the exhaust side, I noticed that the metal bearing was situated below the frame just a tiny bit, so I sanded it off until I reached it (which was very minimal), and then placed the sticker back on. I only did this for the fan on the IO side but not for the fan on the PSU side.very interesting! so was the 2.4mm entirely on the intake side or that includes the exhaust side as well? the way I did it was with a CNC machine, don't think I would risk it on the exhaust side since it may affect structural integrity and the knife blade may hit the hub/motor inadvertently. glad it works out for you!