We have a heatsink .86 x 1.86 x .125, Al 6061, We are using 440 cap head screws to attach. The screws are .200 from each end, only two. The thermal conductive material is T805 and requires 100 PSI to achieve its thermal conductivity value. Thatcalculates to 160 lbs of force over the 1.6 sq in...