T480 trackpoint button iffy

I was searching but couldn't find an answer to this specific thing. One of my buttons has gotten squishy and doesn't register clicks right, making it difficult to drag and drop.

I found that on some models one can pop the buttons off, is this the case of T480 as well?

If that doesn't help, what will need replacing?

Search results are too bogged down with TPoint caps and touchpad replacements, and BIOS/driver problems.