So... bolt/washer/mobo/washer/nuts/block/washers/springs/knurlednuts.
The criss-cross pattern is very important, if you value your CPU. Some instructions say to turn each knob 1/4 turn, in a criss cross pattern.
Some people here would tell you to turn them all the way down, but that's up to you. Personally, I'd turn them almost all the way down.