I guess I'm an idiot then since I didn't go out and waste money on a second fan, remove the shroud so junk can get sucked into the miner and potentially snap a fan blade (trust me they're fragile, received one broken during shipping). Been running lanfeusst's modified fan control file for about 24 hours now on one of my miners, RPM's still holding steady at 3360 and temps in the mid 50s and happy to report no spontaneous combustion has occurred. Oh and I've been and Engineer for 20+ years and have somehow survived more than 2 days at every job. Keep up the good work lanfeusst.