In my case the top left screw - the orange screw - stayed in the front panel assembly cable bracket and would not come out. Later on I realized that the standoff screw which is underneath stayed fixed in the 1.7 mm screw. In fact this was no problem and I didn’t need to figure out how to remove the standoff screw at step 36. I just put it back in altogether and it worked fine. I actually removed both screws at once.