Had the same issue with rubber guards. See my comment on Step 22.
Also, found it quite challenging to avoid touching the gold connectors. Not so much on removing the old modules but tricky to avoid touching whilst inserting the new.
By this point, the rubber guards had completely fallen off and were proving troublesome to fasten back into place.
Eventually, on careful inspection I realised my error. The rubber guards on the inside have thin needle like rubber inserts that actually fit inside the metal RAM clips. Inspect one of them carefully on the inside with a magnifying glass and you’ll see what I mean.
So, to re-attach, angle them with the RAM and retaining clips. Next slide them down at that angle such that the thin rubber insert enters the top gap of each retaining clip.
ps. just seen a similar comment on this and a video posted on the previous step by @dermoid777.
Totally agree with Michael above. Re-connecting the antenna was the most fiddly part of the entire operation. First connecting it and secondly lining up the small guide plate where the screw keeps everything in place.
My tip would be that the connector isn’t particularly difficult as such. It’s just very small.
It is at the top of the cable so line that up. When it is lined up some gentle pushing secures it in place. Definitely don’t try to force it as it looks easily damaged. Like everything, when it’s lined up it’ll be easy and you’ll know it’s all good hearing and feeling it gently fasten.
The screw was easier by comparison. After a couple of attempts the hole was visible enough and it took the screw.