I used this guide to teardown one for cockroach cleanup.

Awesome guide! F&$@ the roaches.

I curled the larger (new) cable the same way the smaller one was already curled. Just spend some time doing that until it was shaped that way and it was a lot easier to get both through the molded tube and ring.

Same as above:

I found it easiest to just remove the buttons and rubber backings here as well - they will likely just fall out anyway when moving the case around and you may lose them.

Is there a good way to get these out without damaging them? Using a push pin or exacto-knife usually still damages them some.

Or can you get replacements?

It’s not mentioned here, but I found it easiest to just remove the buttons and rubber backings here as well - they will likely just fall out anyway when moving the case around and you may lose them.

When reversing this after putting the new screen in, the larger of these two ribbon cables will be built into the new screen.

I found it easiest to spend some time coiling the new ribbon cable from the middle up to the end, similar to how the old screen’s ribbon cable is coiled.

This makes moving it back through the molded tube in the housing and then slipping the steel hinge tube a lot easier.

Surprisingly, these cables are pretty sturdy - I’ve kinked one or two and it still functions, however I’d still say take it slow and try to avoid anything like that.