im trying to install a Zalman 900 on my x1900 xtx and i have just taken off the stock fan. The first thing im supposed to do is put the 8 heatsinks on the 8 spots on the GPU, but i have only got 7. Now is 8 needed? am i going to have to get OCuk to send my another 1? if so how do i do this? trouble is atm my computer is out of services with no GPU so im having to use my brothers computer to do this.