lol.. GJ
where did you get those bracket parts, especially the long arm? was it for something else? is that just a heatsink under the fan?
your diy fan must be suspended without even touching it.
I did a diy effort on my 8800gtx recently, tying a quiet 80mm case fan under the bottom of the gtx fan, to help bring in cool air, I tied it on using the black coated wires you get that tie cables and bags together, works fine except I could only get the fan over half the gtx fan because of my x-fi in the way.. at least the other half of the case fan is blowing onto the components at the end of the gtx
it has made a bit of a difference I think, but I might remove it again to double check the difference.