Since I'm basically stuck with the thing, I did a little modifying, the contact surface needed sanding, it was nowhere near the smoothness of the Swiftechs mirror finish, I put 1/16 inch rubber washers, between the fan and the heatsink body and it actually cut the noise considerably, that worked surprisingly well to cut down the resonatating between the high speed fan and heatsink, don't know why they don't ship it from the factory a little more refined, than they do, getting a little better temps, but still 10c higher than the Swiftech.
Details, Details, Its all in the Details, If you need help, Don't leave out the Details.