My X220 is like the grandpa’s axe. Over the decade that I have owned it, I have replaced everything. What I like the most about that design is that it’s easy to disassemble it to bits and reassemble it back non-destructively.
The biggest build quality problem on it (and x230) is the top bar made of plastic, at the top of the back of the lid, for antennas.
It's held so weakly that even a 10-20cm drop will break the plastic clips.
Given it's housing the antennas, there's not much choice of what it can be made of. Cannot be very heavy too, so laptop wouldn't topple.
Probably storing them in near plastic of the screen frame. Newer thinkpads (x270 etc) don't have it. Nor do macbooks.
Did you replace the screen somehow ?
I have a X220, replaced a lot of stuff, but I barely use it today because the 1366x768 screen is not enough anymore...
At least a 1080p display is the bare minimum today.
You can get a PEPE board and upgrade to a 1080p display. It's not super easy to solder on or source the screen though.
I use a dock to add a secondary display that goes directly above the laptop screen.