The little holes in the ends of the ribbon cables can be used to remove/insert them via a dental pick or thin plastic rod. That’s what they’re for. Works better than tweezers. Tweezers can position, the pick can push. These holes can be seen in step 6.
In step 4 only the two screws holding the dial need to be removed. For opening the socket clamps, a plastic spudger is much better than tweezers. Less possibility of damage.
More important, underneath the ribbon cable for the back screen right where it attaches to the socket is a line of capacitors. This line for some reason picks up whatever moisture and contaminants that get into the camera. A little can be seen on the back of the cable in the second picture on Step 9. The caps are just under the ribbon cable end in the illustration. Use some 99% isopropyl alcohol and a camel’s hair brush and clean the caps and the ribbon cable end. DON”T splash it around!