Not sure what I am missing, but what screw are you using to attach the Nepton 280L cooling head to the board, nothing seems to fit.
I had to go to home depot and get 8x 3/4" 6-32(think thats what they are, well normal coarse thread PC) screws
Same here. I actually prefer this method to the thumbscrews, have more control and easier to make small adjustments.